Redesign audio to support multiple audio tracks explicitly

18 files changed, 449 insertions, 266 deletions

diff --git a/src/Config.cpp b/src/Config.cpp
index 9847c45..3832c83 100644
--- a/src/Config.cpp
+++ b/src/Config.cpp
@@ -15,6 +15,8 @@
 #define FORMAT_U32 "%" PRIu32
 
 namespace gsr {
+    static const std::string_view add_audio_track_tag = "[add_audio_track]";
+
     static std::vector<mgl::Keyboard::Key> hotkey_modifiers_to_mgl_keys(uint32_t modifiers) {
         std::vector<mgl::Keyboard::Key> result;
         if(modifiers & HOTKEY_MOD_LCTRL)
@@ -101,6 +103,14 @@ namespace gsr {
         return result;
     }
 
+    bool AudioTrack::operator==(const AudioTrack &other) const {
+        return audio_inputs == other.audio_inputs && application_audio_invert == other.application_audio_invert;
+    }
+
+    bool AudioTrack::operator!=(const AudioTrack &other) const {
+        return !operator==(other);
+    }
+
     Config::Config(const SupportedCaptureOptions &capture_options) {
         const std::string default_videos_save_directory = get_videos_dir();
         const std::string default_pictures_save_directory = get_pictures_dir();
@@ -108,16 +118,16 @@ namespace gsr {
         set_hotkeys_to_default();
 
         streaming_config.record_options.video_quality = "custom";
-        streaming_config.record_options.audio_tracks.push_back("default_output");
+        streaming_config.record_options.audio_tracks_list.push_back({std::vector<std::string>{"default_output"}, false});
         streaming_config.record_options.video_bitrate = 15000;
 
         record_config.save_directory = default_videos_save_directory;
-        record_config.record_options.audio_tracks.push_back("default_output");
+        record_config.record_options.audio_tracks_list.push_back({std::vector<std::string>{"default_output"}, false});
         record_config.record_options.video_bitrate = 45000;
 
         replay_config.record_options.video_quality = "custom";
         replay_config.save_directory = default_videos_save_directory;
-        replay_config.record_options.audio_tracks.push_back("default_output");
+        replay_config.record_options.audio_tracks_list.push_back({std::vector<std::string>{"default_output"}, false});
         replay_config.record_options.video_bitrate = 45000;
 
         screenshot_config.save_directory = default_pictures_save_directory;
@@ -152,7 +162,7 @@ namespace gsr {
         return KeyValue{line.substr(0, space_index), line.substr(space_index + 1)};
     }
 
-    using ConfigValue = std::variant<bool*, std::string*, int32_t*, ConfigHotkey*, std::vector<std::string>*>;
+    using ConfigValue = std::variant<bool*, std::string*, int32_t*, ConfigHotkey*, std::vector<std::string>*, std::vector<AudioTrack>*>;
 
     static std::map<std::string_view, ConfigValue> get_config_options(Config &config) {
         return {
@@ -174,6 +184,7 @@ namespace gsr {
             {"streaming.record_options.application_audio_invert", &config.streaming_config.record_options.application_audio_invert},
             {"streaming.record_options.change_video_resolution", &config.streaming_config.record_options.change_video_resolution},
             {"streaming.record_options.audio_track", &config.streaming_config.record_options.audio_tracks},
+            {"streaming.record_options.audio_track_item", &config.streaming_config.record_options.audio_tracks_list},
             {"streaming.record_options.color_range", &config.streaming_config.record_options.color_range},
             {"streaming.record_options.video_quality", &config.streaming_config.record_options.video_quality},
             {"streaming.record_options.codec", &config.streaming_config.record_options.video_codec},
@@ -203,6 +214,7 @@ namespace gsr {
             {"record.record_options.application_audio_invert", &config.record_config.record_options.application_audio_invert},
             {"record.record_options.change_video_resolution", &config.record_config.record_options.change_video_resolution},
             {"record.record_options.audio_track", &config.record_config.record_options.audio_tracks},
+            {"record.record_options.audio_track_item", &config.record_config.record_options.audio_tracks_list},
             {"record.record_options.color_range", &config.record_config.record_options.color_range},
             {"record.record_options.video_quality", &config.record_config.record_options.video_quality},
             {"record.record_options.codec", &config.record_config.record_options.video_codec},
@@ -231,6 +243,7 @@ namespace gsr {
             {"replay.record_options.application_audio_invert", &config.replay_config.record_options.application_audio_invert},
             {"replay.record_options.change_video_resolution", &config.replay_config.record_options.change_video_resolution},
             {"replay.record_options.audio_track", &config.replay_config.record_options.audio_tracks},
+            {"replay.record_options.audio_track_item", &config.replay_config.record_options.audio_tracks_list},
             {"replay.record_options.color_range", &config.replay_config.record_options.color_range},
             {"replay.record_options.video_quality", &config.replay_config.record_options.video_quality},
             {"replay.record_options.codec", &config.replay_config.record_options.video_codec},
@@ -291,6 +304,9 @@ namespace gsr {
             } else if(std::holds_alternative<std::vector<std::string>*>(it.second)) {
                 if(*std::get<std::vector<std::string>*>(it.second) != *std::get<std::vector<std::string>*>(it_other->second))
                     return false;
+            } else if(std::holds_alternative<std::vector<AudioTrack>*>(it.second)) {
+                if(*std::get<std::vector<AudioTrack>*>(it.second) != *std::get<std::vector<AudioTrack>*>(it_other->second))
+                    return false;
             } else {
                 assert(false);
             }
@@ -302,6 +318,17 @@ namespace gsr {
         return !operator==(other);
     }
 
+    static void populate_new_audio_track_from_old(RecordOptions &record_options) {
+        if(record_options.merge_audio_tracks) {
+            record_options.audio_tracks_list.push_back({std::move(record_options.audio_tracks), record_options.application_audio_invert});
+        } else {
+            for(const std::string &audio_input : record_options.audio_tracks) {
+                record_options.audio_tracks_list.push_back({std::vector<std::string>{audio_input}, record_options.application_audio_invert});
+            }
+        }
+        record_options.audio_tracks.clear();
+    }
+
     std::optional<Config> read_config(const SupportedCaptureOptions &capture_options) {
         std::optional<Config> config;
 
@@ -313,10 +340,15 @@ namespace gsr {
         }
 
         config = Config(capture_options);
+
         config->streaming_config.record_options.audio_tracks.clear();
         config->record_config.record_options.audio_tracks.clear();
         config->replay_config.record_options.audio_tracks.clear();
 
+        config->streaming_config.record_options.audio_tracks_list.clear();
+        config->record_config.record_options.audio_tracks_list.clear();
+        config->replay_config.record_options.audio_tracks_list.clear();
+
         auto config_options = get_config_options(config.value());
 
         string_split_char(file_content, '\n', [&](std::string_view line) {
@@ -355,6 +387,23 @@ namespace gsr {
             } else if(std::holds_alternative<std::vector<std::string>*>(it->second)) {
                 std::string array_value(key_value->value);
                 std::get<std::vector<std::string>*>(it->second)->push_back(std::move(array_value));
+            } else if(std::holds_alternative<std::vector<AudioTrack>*>(it->second)) {
+                const size_t space_index = key_value->value.find(' ');
+                if(space_index == std::string_view::npos) {
+                    fprintf(stderr, "Warning: Invalid config option value for %.*s\n", (int)key_value->key.size(), key_value->key.data());
+                    return true;
+                }
+
+                const bool application_audio_invert = key_value->value.substr(0, space_index) == "true";
+                const std::string_view audio_input = key_value->value.substr(space_index + 1);
+                std::vector<AudioTrack> &audio_tracks = *std::get<std::vector<AudioTrack>*>(it->second);
+
+                if(audio_input == add_audio_track_tag) {
+                    audio_tracks.push_back({std::vector<std::string>{}, application_audio_invert});
+                } else if(!audio_tracks.empty()) {
+                    audio_tracks.back().application_audio_invert = application_audio_invert;
+                    audio_tracks.back().audio_inputs.emplace_back(audio_input);
+                }
             } else {
                 assert(false);
             }
@@ -362,11 +411,16 @@ namespace gsr {
             return true;
         });
 
-        if(config->main_config.config_file_version != GSR_CONFIG_FILE_VERSION) {
-            fprintf(stderr, "Info: the config file is outdated, resetting it\n");
-            config = std::nullopt;
+        if(config->main_config.config_file_version == 1) {
+            populate_new_audio_track_from_old(config->streaming_config.record_options);
+            populate_new_audio_track_from_old(config->record_config.record_options);
+            populate_new_audio_track_from_old(config->replay_config.record_options);
         }
 
+        config->streaming_config.record_options.audio_tracks.clear();
+        config->record_config.record_options.audio_tracks.clear();
+        config->replay_config.record_options.audio_tracks.clear();
+
         return config;
     }
 
@@ -402,9 +456,17 @@ namespace gsr {
                 const ConfigHotkey *config_hotkey = std::get<ConfigHotkey*>(it.second);
                     fprintf(file, "%.*s " FORMAT_I64 " " FORMAT_U32 "\n", (int)it.first.size(), it.first.data(), config_hotkey->key, config_hotkey->modifiers);
             } else if(std::holds_alternative<std::vector<std::string>*>(it.second)) {
-                std::vector<std::string> *array = std::get<std::vector<std::string>*>(it.second);
-                for(const std::string &value : *array) {
-                    fprintf(file, "%.*s %s\n", (int)it.first.size(), it.first.data(), value.c_str());
+                std::vector<std::string> *audio_inputs = std::get<std::vector<std::string>*>(it.second);
+                for(const std::string &audio_input : *audio_inputs) {
+                    fprintf(file, "%.*s %s\n", (int)it.first.size(), it.first.data(), audio_input.c_str());
+                }
+            } else if(std::holds_alternative<std::vector<AudioTrack>*>(it.second)) {
+                std::vector<AudioTrack> *audio_tracks = std::get<std::vector<AudioTrack>*>(it.second);
+                for(const AudioTrack &audio_track : *audio_tracks) {
+                    fprintf(file, "%.*s %s %.*s\n", (int)it.first.size(), it.first.data(), audio_track.application_audio_invert ? "true" : "false", (int)add_audio_track_tag.size(), add_audio_track_tag.data());
+                    for(const std::string &audio_input : audio_track.audio_inputs) {
+                        fprintf(file, "%.*s %s %s\n", (int)it.first.size(), it.first.data(), audio_track.application_audio_invert ? "true" : "false", audio_input.c_str());
+                    }
                 }
             } else {
                 assert(false);
diff --git a/src/GlobalHotkeysLinux.cpp b/src/GlobalHotkeysLinux.cpp
index 20b089f..d780916 100644
--- a/src/GlobalHotkeysLinux.cpp
+++ b/src/GlobalHotkeysLinux.cpp
@@ -77,6 +77,8 @@ namespace gsr {
                 fprintf(stderr, "Error: GlobalHotkeysLinux::~GlobalHotkeysLinux: failed to write command to gsr-global-hotkeys, error: %s\n", strerror(errno));
                 close_fds();
             }
+        } else {
+            close_fds();
         }
 
         if(process_id > 0) {
diff --git a/src/GsrInfo.cpp b/src/GsrInfo.cpp
index 5af6397..d7212d7 100644
--- a/src/GsrInfo.cpp
+++ b/src/GsrInfo.cpp
@@ -175,11 +175,6 @@ namespace gsr {
         CAPTURE_OPTIONS
     };
 
-    static bool starts_with(std::string_view str, const char *substr) {
-        size_t len = strlen(substr);
-        return str.size() >= len && memcmp(str.data(), substr, len) == 0;
-    }
-
     GsrInfoExitStatus get_gpu_screen_recorder_info(GsrInfo *gsr_info) {
         *gsr_info = GsrInfo{};
 
diff --git a/src/Overlay.cpp b/src/Overlay.cpp
index c342d37..fe7c88e 100644
--- a/src/Overlay.cpp
+++ b/src/Overlay.cpp
@@ -685,6 +685,8 @@ namespace gsr {
     }
 
     bool Overlay::draw() {
+        remove_widgets_to_be_removed();
+
         update_notification_process_status();
         update_gsr_replay_save();
         update_gsr_process_status();
@@ -1249,6 +1251,7 @@ namespace gsr {
         while(!page_stack.empty()) {
             page_stack.pop();
         }
+        remove_widgets_to_be_removed();
 
         if(default_cursor) {
             XFreeCursor(display, default_cursor);
@@ -1742,28 +1745,25 @@ namespace gsr {
         gpu_screen_recorder_screenshot_process = -1;
     }
 
-    static bool starts_with(std::string_view str, const char *substr) {
-        size_t len = strlen(substr);
-        return str.size() >= len && memcmp(str.data(), substr, len) == 0;
-    }
-
-    static bool are_all_audio_tracks_available_to_capture(const std::vector<std::string> &audio_tracks) {
+    static bool are_all_audio_tracks_available_to_capture(const std::vector<AudioTrack> &audio_tracks) {
         const auto audio_devices = get_audio_devices();
-        for(const std::string &audio_track : audio_tracks) {
-            std::string_view audio_track_name(audio_track.c_str());
-            const bool is_app_audio = starts_with(audio_track_name, "app:");
-            if(is_app_audio)
-                continue;
+        for(const AudioTrack &audio_track : audio_tracks) {
+            for(const std::string &audio_input : audio_track.audio_inputs) {
+                std::string_view audio_track_name(audio_input.c_str());
+                const bool is_app_audio = starts_with(audio_track_name, "app:");
+                if(is_app_audio)
+                    continue;
 
-            if(starts_with(audio_track_name, "device:"))
-                audio_track_name.remove_prefix(7);
+                if(starts_with(audio_track_name, "device:"))
+                    audio_track_name.remove_prefix(7);
 
-            auto it = std::find_if(audio_devices.begin(), audio_devices.end(), [&](const auto &audio_device) {
-                return audio_device.name == audio_track_name;
-            });
-            if(it == audio_devices.end()) {
-                //fprintf(stderr, "Audio not ready\n");
-                return false;
+                auto it = std::find_if(audio_devices.begin(), audio_devices.end(), [&](const auto &audio_device) {
+                    return audio_device.name == audio_track_name;
+                });
+                if(it == audio_devices.end()) {
+                    //fprintf(stderr, "Audio not ready\n");
+                    return false;
+                }
             }
         }
         return true;
@@ -1794,7 +1794,7 @@ namespace gsr {
         focused_window_is_fullscreen = focused_window != 0 && window_is_fullscreen(display, focused_window);
         if(focused_window_is_fullscreen != prev_focused_window_is_fullscreen) {
             if(recording_status == RecordingStatus::NONE && focused_window_is_fullscreen) {
-                if(are_all_audio_tracks_available_to_capture(config.replay_config.record_options.audio_tracks))
+                if(are_all_audio_tracks_available_to_capture(config.replay_config.record_options.audio_tracks_list))
                     on_press_start_replay(false, false);
             } else if(recording_status == RecordingStatus::REPLAY && !focused_window_is_fullscreen) {
                 on_press_start_replay(true, false);
@@ -1811,7 +1811,7 @@ namespace gsr {
         power_supply_connected = power_supply_online_filepath.empty() || power_supply_is_connected(power_supply_online_filepath.c_str());
         if(power_supply_connected != prev_power_supply_status) {
             if(recording_status == RecordingStatus::NONE && power_supply_connected) {
-                if(are_all_audio_tracks_available_to_capture(config.replay_config.record_options.audio_tracks))
+                if(are_all_audio_tracks_available_to_capture(config.replay_config.record_options.audio_tracks_list))
                     on_press_start_replay(false, false);
             } else if(recording_status == RecordingStatus::REPLAY && !power_supply_connected) {
                 on_press_start_replay(false, false);
@@ -1823,7 +1823,7 @@ namespace gsr {
         if(replay_startup_mode != ReplayStartupMode::TURN_ON_AT_SYSTEM_STARTUP || recording_status != RecordingStatus::NONE || !try_replay_startup)
             return;
 
-        if(are_all_audio_tracks_available_to_capture(config.replay_config.record_options.audio_tracks))
+        if(are_all_audio_tracks_available_to_capture(config.replay_config.record_options.audio_tracks_list))
             on_press_start_replay(true, false);
     }
 
@@ -1947,29 +1947,31 @@ namespace gsr {
             return container;
     }
 
-    static std::vector<std::string> create_audio_tracks_real_names(const std::vector<std::string> &audio_tracks, bool application_audio_invert, const GsrInfo &gsr_info) {
+    static std::vector<std::string> create_audio_tracks_cli_args(const std::vector<AudioTrack> &audio_tracks, const GsrInfo &gsr_info) {
         std::vector<std::string> result;
-        for(const std::string &audio_track : audio_tracks) {
-            std::string audio_track_name = audio_track;
-            const bool is_app_audio = starts_with(audio_track_name, "app:");
-            if(is_app_audio && !gsr_info.system_info.supports_app_audio)
-                continue;
+        result.reserve(audio_tracks.size());
+
+        for(const AudioTrack &audio_track : audio_tracks) {
+            std::string audio_track_merged;
+            for(const std::string &audio_input_name : audio_track.audio_inputs) {
+                std::string new_audio_input_name = audio_input_name;
+                const bool is_app_audio = starts_with(new_audio_input_name, "app:");
+                if(is_app_audio && !gsr_info.system_info.supports_app_audio)
+                    continue;
 
-            if(is_app_audio && application_audio_invert)
-                audio_track_name.replace(0, 4, "app-inverse:");
+                if(is_app_audio && audio_track.application_audio_invert)
+                    new_audio_input_name.replace(0, 4, "app-inverse:");
 
-            result.push_back(std::move(audio_track_name));
-        }
-        return result;
-    }
+                if(!audio_track_merged.empty())
+                    audio_track_merged += "|";
 
-    static std::string merge_audio_tracks(const std::vector<std::string> &audio_tracks) {
-        std::string result;
-        for(size_t i = 0; i < audio_tracks.size(); ++i) {
-            if(i > 0)
-                result += "|";
-            result += audio_tracks[i];
+                audio_track_merged += new_audio_input_name;
+            }
+
+            if(!audio_track_merged.empty())
+                result.push_back(std::move(audio_track_merged));
         }
+
         return result;
     }
 
@@ -1984,7 +1986,7 @@ namespace gsr {
         args.push_back(region_str);
     }
 
-    static void add_common_gpu_screen_recorder_args(std::vector<const char*> &args, const RecordOptions &record_options, const std::vector<std::string> &audio_tracks, const std::string &video_bitrate, const char *region, const std::string &audio_devices_merged, char *region_str, int region_str_size, const RegionSelector &region_selector) {
+    static void add_common_gpu_screen_recorder_args(std::vector<const char*> &args, const RecordOptions &record_options, const std::vector<std::string> &audio_tracks, const std::string &video_bitrate, const char *region, char *region_str, int region_str_size, const RegionSelector &region_selector) {
         if(record_options.video_quality == "custom") {
             args.push_back("-bm");
             args.push_back("cbr");
@@ -2000,16 +2002,9 @@ namespace gsr {
             args.push_back(region);
         }
 
-        if(record_options.merge_audio_tracks) {
-            if(!audio_devices_merged.empty()) {
-                args.push_back("-a");
-                args.push_back(audio_devices_merged.c_str());
-            }
-        } else {
-            for(const std::string &audio_track : audio_tracks) {
-                args.push_back("-a");
-                args.push_back(audio_track.c_str());
-            }
+        for(const std::string &audio_track : audio_tracks) {
+            args.push_back("-a");
+            args.push_back(audio_track.c_str());
         }
 
         if(record_options.restore_portal_session) {
@@ -2133,8 +2128,7 @@ namespace gsr {
         const std::string fps = std::to_string(config.replay_config.record_options.fps);
         const std::string video_bitrate = std::to_string(config.replay_config.record_options.video_bitrate);
         const std::string output_directory = config.replay_config.save_directory;
-        const std::vector<std::string> audio_tracks = create_audio_tracks_real_names(config.replay_config.record_options.audio_tracks, config.replay_config.record_options.application_audio_invert, gsr_info);
-        const std::string audio_tracks_merged = merge_audio_tracks(audio_tracks);
+        const std::vector<std::string> audio_tracks = create_audio_tracks_cli_args(config.replay_config.record_options.audio_tracks_list, gsr_info);
         const std::string framerate_mode = config.replay_config.record_options.framerate_mode == "auto" ? "vfr" : config.replay_config.record_options.framerate_mode;
         const std::string replay_time = std::to_string(config.replay_config.replay_time);
         const char *video_codec = config.replay_config.record_options.video_codec.c_str();
@@ -2173,7 +2167,7 @@ namespace gsr {
         }
 
         char region_str[128];
-        add_common_gpu_screen_recorder_args(args, config.replay_config.record_options, audio_tracks, video_bitrate, size, audio_tracks_merged, region_str, sizeof(region_str), region_selector);
+        add_common_gpu_screen_recorder_args(args, config.replay_config.record_options, audio_tracks, video_bitrate, size, region_str, sizeof(region_str), region_selector);
 
         args.push_back(nullptr);
 
@@ -2276,8 +2270,7 @@ namespace gsr {
         const std::string fps = std::to_string(config.record_config.record_options.fps);
         const std::string video_bitrate = std::to_string(config.record_config.record_options.video_bitrate);
         const std::string output_file = config.record_config.save_directory + "/Video_" + get_date_str() + "." + container_to_file_extension(config.record_config.container.c_str());
-        const std::vector<std::string> audio_tracks = create_audio_tracks_real_names(config.record_config.record_options.audio_tracks, config.record_config.record_options.application_audio_invert, gsr_info);
-        const std::string audio_tracks_merged = merge_audio_tracks(audio_tracks);
+        const std::vector<std::string> audio_tracks = create_audio_tracks_cli_args(config.record_config.record_options.audio_tracks_list, gsr_info);
         const std::string framerate_mode = config.record_config.record_options.framerate_mode == "auto" ? "vfr" : config.record_config.record_options.framerate_mode;
         const char *video_codec = config.record_config.record_options.video_codec.c_str();
         const char *encoder = "gpu";
@@ -2309,7 +2302,7 @@ namespace gsr {
         };
 
         char region_str[128];
-        add_common_gpu_screen_recorder_args(args, config.record_config.record_options, audio_tracks, video_bitrate, size, audio_tracks_merged, region_str, sizeof(region_str), region_selector);
+        add_common_gpu_screen_recorder_args(args, config.record_config.record_options, audio_tracks, video_bitrate, size, region_str, sizeof(region_str), region_selector);
 
         args.push_back(nullptr);
 
@@ -2429,8 +2422,11 @@ namespace gsr {
         // TODO: Validate input, fallback to valid values
         const std::string fps = std::to_string(config.streaming_config.record_options.fps);
         const std::string video_bitrate = std::to_string(config.streaming_config.record_options.video_bitrate);
-        const std::vector<std::string> audio_tracks = create_audio_tracks_real_names(config.streaming_config.record_options.audio_tracks, config.streaming_config.record_options.application_audio_invert, gsr_info);
-        const std::string audio_tracks_merged = merge_audio_tracks(audio_tracks);
+        std::vector<std::string> audio_tracks = create_audio_tracks_cli_args(config.streaming_config.record_options.audio_tracks_list, gsr_info);
+        // This isn't possible unless the user modified the config file manually,
+        // But we check it anyways as streaming on some sites can fail if there is more than one audio track
+        if(audio_tracks.size() > 1)
+            audio_tracks.resize(1);
         const std::string framerate_mode = config.streaming_config.record_options.framerate_mode == "auto" ? "vfr" : config.streaming_config.record_options.framerate_mode;
         const char *video_codec = config.streaming_config.record_options.video_codec.c_str();
         const char *encoder = "gpu";
@@ -2466,9 +2462,8 @@ namespace gsr {
             "-o", url.c_str()
         };
 
-        config.streaming_config.record_options.merge_audio_tracks = true;
         char region_str[128];
-        add_common_gpu_screen_recorder_args(args, config.streaming_config.record_options, audio_tracks, video_bitrate, size, audio_tracks_merged, region_str, sizeof(region_str), region_selector);
+        add_common_gpu_screen_recorder_args(args, config.streaming_config.record_options, audio_tracks, video_bitrate, size, region_str, sizeof(region_str), region_selector);
 
         args.push_back(nullptr);
 
diff --git a/src/Theme.cpp b/src/Theme.cpp
index 2001f7d..c813834 100644
--- a/src/Theme.cpp
+++ b/src/Theme.cpp
@@ -75,7 +75,7 @@ namespace gsr {
         if(!theme->folder_texture.load_from_file((resources_path + "images/folder.png").c_str()))
             goto error;
 
-        if(!theme->up_arrow_texture.load_from_file((resources_path + "images/up_arrow.png").c_str()))
+        if(!theme->up_arrow_texture.load_from_file((resources_path + "images/up_arrow.png").c_str(), mgl::Texture::LoadOptions{false, false, true}))
             goto error;
 
         if(!theme->replay_button_texture.load_from_file((resources_path + "images/replay.png").c_str()))
@@ -93,10 +93,10 @@ namespace gsr {
         if(!theme->logo_texture.load_from_file((resources_path + "images/gpu_screen_recorder_logo.png").c_str()))
             goto error;
 
-        if(!theme->checkbox_circle_texture.load_from_file((resources_path + "images/checkbox_circle.png").c_str()))
+        if(!theme->checkbox_circle_texture.load_from_file((resources_path + "images/checkbox_circle.png").c_str(), mgl::Texture::LoadOptions{false, false, true}))
             goto error;
 
-        if(!theme->checkbox_background_texture.load_from_file((resources_path + "images/checkbox_background.png").c_str()))
+        if(!theme->checkbox_background_texture.load_from_file((resources_path + "images/checkbox_background.png").c_str(), mgl::Texture::LoadOptions{false, false, true}))
             goto error;
 
         if(!theme->play_texture.load_from_file((resources_path + "images/play.png").c_str()))
@@ -114,6 +114,9 @@ namespace gsr {
         if(!theme->screenshot_texture.load_from_file((resources_path + "images/screenshot.png").c_str()))
             goto error;
 
+        if(!theme->trash_texture.load_from_file((resources_path + "images/trash.png").c_str(), mgl::Texture::LoadOptions{false, false, true}))
+            goto error;
+
         if(!theme->ps4_home_texture.load_from_file((resources_path + "images/ps4_home.png").c_str(), mgl::Texture::LoadOptions{false, false, true}))
             goto error;
 
diff --git a/src/Utils.cpp b/src/Utils.cpp
index df6db2f..bc7b1f2 100644
--- a/src/Utils.cpp
+++ b/src/Utils.cpp
@@ -22,6 +22,11 @@ namespace gsr {
         }
     }
 
+    bool starts_with(std::string_view str, const char *substr) {
+        size_t len = strlen(substr);
+        return str.size() >= len && memcmp(str.data(), substr, len) == 0;
+    }
+
     std::string get_home_dir() {
         const char *home_dir = getenv("HOME");
         if(!home_dir) {
diff --git a/src/gui/ComboBox.cpp b/src/gui/ComboBox.cpp
index dbe9aa0..08c4ec2 100644
--- a/src/gui/ComboBox.cpp
+++ b/src/gui/ComboBox.cpp
@@ -85,7 +85,7 @@ namespace gsr {
 
     void ComboBox::add_item(const std::string &text, const std::string &id) {
         items.push_back({mgl::Text(text, *font), id, {0.0f, 0.0f}});
-        items.back().text.set_max_width(font->get_character_size() * 22); // TODO: Make a proper solution
+        items.back().text.set_max_width(font->get_character_size() * 25); // TODO: Make a proper solution
         //items.back().text.set_max_rows(1);
         dirty = true;
     }
diff --git a/src/gui/GlobalSettingsPage.cpp b/src/gui/GlobalSettingsPage.cpp
index 1e2a444..fd4b6b8 100644
--- a/src/gui/GlobalSettingsPage.cpp
+++ b/src/gui/GlobalSettingsPage.cpp
@@ -149,7 +149,7 @@ namespace gsr {
         tint_color_radio_button_ptr = tint_color_radio_button.get();
         tint_color_radio_button->add_item("Red", "amd");
         tint_color_radio_button->add_item("Green", "nvidia");
-        tint_color_radio_button->add_item("blue", "intel");
+        tint_color_radio_button->add_item("Blue", "intel");
         tint_color_radio_button->on_selection_changed = [](const std::string&, const std::string &id) {
             if(id == "amd")
                 get_color_theme().tint_color = mgl::Color(221, 0, 49);
diff --git a/src/gui/GsrPage.cpp b/src/gui/GsrPage.cpp
index 663187c..b4005f5 100644
--- a/src/gui/GsrPage.cpp
+++ b/src/gui/GsrPage.cpp
@@ -39,8 +39,9 @@ namespace gsr {
 
         // Process widgets by visibility (backwards)
         return widgets.for_each_reverse([selected_widget, &window, &event, content_page_position](std::unique_ptr<Widget> &widget) {
-            if(widget.get() != selected_widget) {
-                if(!widget->on_event(event, window, content_page_position))
+            Widget *p = widget.get();
+            if(p != selected_widget) {
+                if(!p->on_event(event, window, content_page_position))
                     return false;
             }
             return true;
diff --git a/src/gui/List.cpp b/src/gui/List.cpp
index 5294e36..57a6045 100644
--- a/src/gui/List.cpp
+++ b/src/gui/List.cpp
@@ -24,14 +24,23 @@ namespace gsr {
         // Process widgets by visibility (backwards)
         return widgets.for_each_reverse([selected_widget, &event, &window](std::unique_ptr<Widget> &widget) {
             // Ignore offset because widgets are positioned with offset in ::draw, this solution is simpler
-            if(widget.get() != selected_widget) {
-                if(!widget->on_event(event, window, mgl::vec2f(0.0f, 0.0f)))
+            Widget *p = widget.get();
+            if(p != selected_widget) {
+                if(!p->on_event(event, window, mgl::vec2f(0.0f, 0.0f)))
                     return false;
             }
             return true;
         });
     }
 
+    List::~List() {
+        widgets.for_each([this](std::unique_ptr<Widget> &widget) {
+            if(widget->parent_widget == this)
+                widget->parent_widget = nullptr;
+            return true;
+        }, true);
+    }
+
     void List::draw(mgl::Window &window, mgl::vec2f offset) {
         if(!visible)
             return;
@@ -104,15 +113,6 @@ namespace gsr {
             selected_widget->draw(window, mgl::vec2f(0.0f, 0.0f));
     }
 
-    // void List::remove_child_widget(Widget *widget) {
-    //     for(auto it = widgets.begin(), end = widgets.end(); it != end; ++it) {
-    //         if(it->get() == widget) {
-    //             widgets.erase(it);
-    //             return;
-    //         }
-    //     }
-    // }
-
     void List::add_widget(std::unique_ptr<Widget> widget) {
         widget->parent_widget = this;
         widgets.push_back(std::move(widget));
@@ -122,6 +122,10 @@ namespace gsr {
         widgets.remove(widget);
     }
 
+    void List::replace_widget(Widget *widget, std::unique_ptr<Widget> new_widget) {
+        widgets.replace_item(widget, std::move(new_widget));
+    }
+
     void List::clear() {
         widgets.clear();
     }
@@ -137,6 +141,10 @@ namespace gsr {
             return nullptr;
     }
 
+    size_t List::get_num_children() const {
+        return widgets.size();
+    }
+
     void List::set_spacing(float spacing) {
         spacing_scale = spacing;
     }
diff --git a/src/gui/Page.cpp b/src/gui/Page.cpp
index ae13d82..5f21b71 100644
--- a/src/gui/Page.cpp
+++ b/src/gui/Page.cpp
@@ -1,14 +1,13 @@
 #include "../../include/gui/Page.hpp"
 
 namespace gsr {
-    // void Page::remove_child_widget(Widget *widget) {
-    //     for(auto it = widgets.begin(), end = widgets.end(); it != end; ++it) {
-    //         if(it->get() == widget) {
-    //             widgets.erase(it);
-    //             return;
-    //         }
-    //     }
-    // }
+    Page::~Page() {
+        widgets.for_each([this](std::unique_ptr<Widget> &widget) {
+            if(widget->parent_widget == this)
+                widget->parent_widget = nullptr;
+            return true;
+        }, true);
+    }
 
     void Page::add_widget(std::unique_ptr<Widget> widget) {
         widget->parent_widget = this;
diff --git a/src/gui/ScreenshotSettingsPage.cpp b/src/gui/ScreenshotSettingsPage.cpp
index 2dedd86..5b8efbd 100644
--- a/src/gui/ScreenshotSettingsPage.cpp
+++ b/src/gui/ScreenshotSettingsPage.cpp
@@ -257,8 +257,7 @@ namespace gsr {
     void ScreenshotSettingsPage::add_widgets() {
         content_page_ptr->add_widget(create_settings());
 
-        record_area_box_ptr->on_selection_changed = [this](const std::string &text, const std::string &id) {
-            (void)text;
+        record_area_box_ptr->on_selection_changed = [this](const std::string&, const std::string &id) {
             const bool window_selected = id == "window";
             const bool portal_selected = id == "portal";
             select_window_list_ptr->set_visible(window_selected);
diff --git a/src/gui/ScrollablePage.cpp b/src/gui/ScrollablePage.cpp
index d5e92d0..cec20d3 100644
--- a/src/gui/ScrollablePage.cpp
+++ b/src/gui/ScrollablePage.cpp
@@ -15,6 +15,14 @@ namespace gsr {
 
     ScrollablePage::ScrollablePage(mgl::vec2f size) : size(size) {}
 
+    ScrollablePage::~ScrollablePage() {
+        widgets.for_each([this](std::unique_ptr<Widget> &widget) {
+            if(widget->parent_widget == this)
+                widget->parent_widget = nullptr;
+            return true;
+        }, true);
+    }
+
     bool ScrollablePage::on_event(mgl::Event &event, mgl::Window &window, mgl::vec2f offset) {
         if(!visible)
             return true;
@@ -57,8 +65,9 @@ namespace gsr {
 
         // Process widgets by visibility (backwards)
         const bool continue_events = widgets.for_each_reverse([selected_widget, &window, &event, offset](std::unique_ptr<Widget> &widget) {
-            if(widget.get() != selected_widget) {
-                if(!widget->on_event(event, window, offset))
+            Widget *p = widget.get();
+            if(p != selected_widget) {
+                if(!p->on_event(event, window, offset))
                     return false;
             }
             return true;
diff --git a/src/gui/SettingsPage.cpp b/src/gui/SettingsPage.cpp
index 663e941..94eeb0d 100644
--- a/src/gui/SettingsPage.cpp
+++ b/src/gui/SettingsPage.cpp
@@ -11,6 +11,8 @@
 #include <string.h>
 
 namespace gsr {
+    static const char *custom_app_audio_tag = "[custom]";
+
     enum class AudioTrackType {
         DEVICE,
         APPLICATION,
@@ -202,121 +204,199 @@ namespace gsr {
         return audio_device_box;
     }
 
-    std::unique_ptr<Button> SettingsPage::create_remove_audio_device_button(List *audio_device_list_ptr) {
-        auto remove_audio_track_button = std::make_unique<Button>(&get_theme().body_font, "Remove", mgl::vec2f(0.0f, 0.0f), mgl::Color(0, 0, 0, 120));
-        remove_audio_track_button->on_click = [this, audio_device_list_ptr]() {
-            audio_track_list_ptr->remove_widget(audio_device_list_ptr);
+    static void set_application_audio_options_visible(Subsection *audio_track_subsection, bool visible, const GsrInfo &gsr_info) {
+        if(!gsr_info.system_info.supports_app_audio)
+            visible = false;
+
+        List *audio_track_items_list = dynamic_cast<List*>(audio_track_subsection->get_inner_widget());
+
+        List *buttons_list = dynamic_cast<List*>(audio_track_items_list->get_child_widget_by_index(1));
+        Button *add_application_audio_button = dynamic_cast<Button*>(buttons_list->get_child_widget_by_index(1));
+        add_application_audio_button->set_visible(visible);
+
+        CheckBox *invert_app_audio_checkbox = dynamic_cast<CheckBox*>(audio_track_items_list->get_child_widget_by_index(3));
+        invert_app_audio_checkbox->set_visible(visible);
+    }
+
+    static void set_application_audio_options_visible(List *audio_track_section_list_ptr, bool visible, const GsrInfo &gsr_info) {
+        audio_track_section_list_ptr->for_each_child_widget([visible, &gsr_info](std::unique_ptr<Widget> &widget) {
+            Subsection *audio_track_subsection = dynamic_cast<Subsection*>(widget.get());
+            set_application_audio_options_visible(audio_track_subsection, visible, gsr_info);
+            return true;
+        });
+    }
+
+    std::unique_ptr<Button> SettingsPage::create_remove_audio_device_button(List *audio_input_list_ptr, List *audio_device_list_ptr) {
+        auto remove_audio_track_button = std::make_unique<Button>(&get_theme().body_font, "", mgl::vec2f(0.0f, 0.0f), mgl::Color(35, 40, 44));
+        remove_audio_track_button->set_icon(&get_theme().trash_texture);
+        remove_audio_track_button->on_click = [audio_input_list_ptr, audio_device_list_ptr]() {
+            audio_input_list_ptr->remove_widget(audio_device_list_ptr);
         };
         return remove_audio_track_button;
     }
 
-    std::unique_ptr<List> SettingsPage::create_audio_device() {
+    std::unique_ptr<List> SettingsPage::create_audio_device(List *audio_input_list_ptr) {
         auto audio_device_list = std::make_unique<List>(List::Orientation::HORIZONTAL, List::Alignment::CENTER);
         audio_device_list->userdata = (void*)(uintptr_t)AudioTrackType::DEVICE;
         audio_device_list->add_widget(std::make_unique<Label>(&get_theme().body_font, "Device:", get_color_theme().text_color));
         audio_device_list->add_widget(create_audio_device_selection_combobox());
-        audio_device_list->add_widget(create_remove_audio_device_button(audio_device_list.get()));
+        audio_device_list->add_widget(create_remove_audio_device_button(audio_input_list_ptr, audio_device_list.get()));
         return audio_device_list;
     }
 
-    std::unique_ptr<Button> SettingsPage::create_add_audio_device_button() {
+    std::unique_ptr<Button> SettingsPage::create_add_audio_track_button() {
+        auto button = std::make_unique<Button>(&get_theme().body_font, "Add audio track", mgl::vec2f(0.0f, 0.0f), mgl::Color(0, 0, 0, 120));
+        button->on_click = [this]() {
+            audio_track_section_list_ptr->add_widget(create_audio_track_section(audio_section_ptr));
+        };
+        button->set_visible(type != Type::STREAM);
+        return button;
+    }
+
+    std::unique_ptr<Button> SettingsPage::create_add_audio_device_button(List *audio_input_list_ptr) {
         auto add_audio_track_button = std::make_unique<Button>(&get_theme().body_font, "Add audio device", mgl::vec2f(0.0f, 0.0f), mgl::Color(0, 0, 0, 120));
-        add_audio_track_button->on_click = [this]() {
+        add_audio_track_button->on_click = [this, audio_input_list_ptr]() {
             audio_devices = get_audio_devices();
-            audio_track_list_ptr->add_widget(create_audio_device());
+            audio_input_list_ptr->add_widget(create_audio_device(audio_input_list_ptr));
         };
         return add_audio_track_button;
     }
 
-    std::unique_ptr<ComboBox> SettingsPage::create_application_audio_selection_combobox() {
+    std::unique_ptr<ComboBox> SettingsPage::create_application_audio_selection_combobox(List *application_audio_row) {
         auto audio_device_box = std::make_unique<ComboBox>(&get_theme().body_font);
+        ComboBox *audio_device_box_ptr = audio_device_box.get();
         for(const auto &app_audio : application_audio) {
             audio_device_box->add_item(app_audio, app_audio);
         }
+        audio_device_box->add_item("Custom...", custom_app_audio_tag);
+
+        audio_device_box->on_selection_changed = [application_audio_row, audio_device_box_ptr](const std::string&, const std::string &id) {
+            if(id == custom_app_audio_tag) {
+                application_audio_row->userdata = (void*)(uintptr_t)AudioTrackType::APPLICATION_CUSTOM;
+                auto custom_app_audio_entry = std::make_unique<Entry>(&get_theme().body_font, "", (int)(get_theme().body_font.get_character_size() * 10.0f));
+                application_audio_row->replace_widget(audio_device_box_ptr, std::move(custom_app_audio_entry));
+            }
+        };
+
         return audio_device_box;
     }
 
-    std::unique_ptr<List> SettingsPage::create_application_audio() {
+    std::unique_ptr<List> SettingsPage::create_application_audio(List *audio_input_list_ptr) {
         auto application_audio_list = std::make_unique<List>(List::Orientation::HORIZONTAL, List::Alignment::CENTER);
         application_audio_list->userdata = (void*)(uintptr_t)AudioTrackType::APPLICATION;
         application_audio_list->add_widget(std::make_unique<Label>(&get_theme().body_font, "App:     ", get_color_theme().text_color));
-        application_audio_list->add_widget(create_application_audio_selection_combobox());
-        application_audio_list->add_widget(create_remove_audio_device_button(application_audio_list.get()));
+        application_audio_list->add_widget(create_application_audio_selection_combobox(application_audio_list.get()));
+        application_audio_list->add_widget(create_remove_audio_device_button(audio_input_list_ptr, application_audio_list.get()));
         return application_audio_list;
     }
 
-    std::unique_ptr<List> SettingsPage::create_custom_application_audio() {
+    std::unique_ptr<List> SettingsPage::create_custom_application_audio(List *audio_input_list_ptr) {
         auto application_audio_list = std::make_unique<List>(List::Orientation::HORIZONTAL, List::Alignment::CENTER);
         application_audio_list->userdata = (void*)(uintptr_t)AudioTrackType::APPLICATION_CUSTOM;
         application_audio_list->add_widget(std::make_unique<Label>(&get_theme().body_font, "App:     ", get_color_theme().text_color));
         application_audio_list->add_widget(std::make_unique<Entry>(&get_theme().body_font, "", (int)(get_theme().body_font.get_character_size() * 10.0f)));
-        application_audio_list->add_widget(create_remove_audio_device_button(application_audio_list.get()));
+        application_audio_list->add_widget(create_remove_audio_device_button(audio_input_list_ptr, application_audio_list.get()));
         return application_audio_list;
     }
 
-    std::unique_ptr<Button> SettingsPage::create_add_application_audio_button() {
+    std::unique_ptr<Button> SettingsPage::create_add_application_audio_button(List *audio_input_list_ptr) {
         auto add_audio_track_button = std::make_unique<Button>(&get_theme().body_font, "Add application audio", mgl::vec2f(0.0f, 0.0f), mgl::Color(0, 0, 0, 120));
-        add_application_audio_button_ptr = add_audio_track_button.get();
-        add_audio_track_button->on_click = [this]() {
+        add_audio_track_button->on_click = [this, audio_input_list_ptr]() {
             application_audio = get_application_audio();
-            audio_track_list_ptr->add_widget(create_application_audio());
+            if(application_audio.empty())
+                audio_input_list_ptr->add_widget(create_custom_application_audio(audio_input_list_ptr));
+            else
+                audio_input_list_ptr->add_widget(create_application_audio(audio_input_list_ptr));
         };
         return add_audio_track_button;
     }
 
-    std::unique_ptr<Button> SettingsPage::create_add_custom_application_audio_button() {
-        auto add_audio_track_button = std::make_unique<Button>(&get_theme().body_font, "Add custom application audio", mgl::vec2f(0.0f, 0.0f), mgl::Color(0, 0, 0, 120));
-        add_custom_application_audio_button_ptr = add_audio_track_button.get();
-        add_audio_track_button->on_click = [this]() {
-            audio_track_list_ptr->add_widget(create_custom_application_audio());
-        };
-        return add_audio_track_button;
-    }
-
-    std::unique_ptr<List> SettingsPage::create_add_audio_buttons() {
+    std::unique_ptr<List> SettingsPage::create_add_audio_buttons(List *audio_input_list_ptr) {
         auto list = std::make_unique<List>(List::Orientation::HORIZONTAL, List::Alignment::CENTER);
-        list->add_widget(create_add_audio_device_button());
-        list->add_widget(create_add_application_audio_button());
-        list->add_widget(create_add_custom_application_audio_button());
+        list->add_widget(create_add_audio_device_button(audio_input_list_ptr));
+        list->add_widget(create_add_application_audio_button(audio_input_list_ptr));
         return list;
     }
 
-    std::unique_ptr<List> SettingsPage::create_audio_track_track_section() {
+    std::unique_ptr<List> SettingsPage::create_audio_input_section() {
         auto list = std::make_unique<List>(List::Orientation::VERTICAL);
-        audio_track_list_ptr = list.get();
-        audio_track_list_ptr->add_widget(create_audio_device()); // Add default_output by default
+        //list->add_widget(create_audio_device(list.get())); // Add default_output by default
         return list;
     }
 
-    std::unique_ptr<CheckBox> SettingsPage::create_split_audio_checkbox() {
-        auto split_audio_checkbox = std::make_unique<CheckBox>(&get_theme().body_font, "Split each device/app audio into separate audio tracks");
-        split_audio_checkbox->set_checked(false);
-        split_audio_checkbox_ptr = split_audio_checkbox.get();
-        return split_audio_checkbox;
-    }
-
     std::unique_ptr<CheckBox> SettingsPage::create_application_audio_invert_checkbox() {
         auto application_audio_invert_checkbox = std::make_unique<CheckBox>(&get_theme().body_font, "Record audio from all applications except the selected ones");
         application_audio_invert_checkbox->set_checked(false);
-        application_audio_invert_checkbox_ptr = application_audio_invert_checkbox.get();
         return application_audio_invert_checkbox;
     }
 
-    std::unique_ptr<Widget> SettingsPage::create_audio_track_section() {
+    static void update_audio_track_titles(List *audio_track_section_list_ptr) {
+        int index = 0;
+        audio_track_section_list_ptr->for_each_child_widget([&index](std::unique_ptr<Widget> &widget) {
+            char audio_track_name[32];
+            snprintf(audio_track_name, sizeof(audio_track_name), "Audio track #%d", 1 + index);
+            ++index;
+
+            Subsection *subsection = dynamic_cast<Subsection*>(widget.get());
+            List *subesection_items = dynamic_cast<List*>(subsection->get_inner_widget());
+            Label *audio_track_title = dynamic_cast<Label*>(dynamic_cast<List*>(subesection_items->get_child_widget_by_index(0))->get_child_widget_by_index(0));
+            audio_track_title->set_text(audio_track_name);
+            return true;
+        });
+    }
+
+    std::unique_ptr<List> SettingsPage::create_audio_track_title_and_remove(Subsection *audio_track_subsection, const char *title) {
+        auto list = std::make_unique<List>(List::Orientation::HORIZONTAL, List::Alignment::CENTER);
+        list->add_widget(std::make_unique<Label>(&get_theme().title_font, title, get_color_theme().text_color));
+
+        auto remove_track_button = std::make_unique<Button>(&get_theme().body_font, "", mgl::vec2f(0.0f, 0.0f), mgl::Color(35, 40, 44));
+        remove_track_button->set_icon(&get_theme().trash_texture);
+        remove_track_button->on_click = [this, audio_track_subsection]() {
+            audio_track_section_list_ptr->remove_widget(audio_track_subsection);
+            update_audio_track_titles(audio_track_section_list_ptr);
+        };
+        list->add_widget(std::move(remove_track_button));
+        list->set_visible(type != Type::STREAM);
+        return list;
+    }
+
+    std::unique_ptr<Subsection> SettingsPage::create_audio_track_section(Widget *parent_widget) {
+        char audio_track_name[32];
+        snprintf(audio_track_name, sizeof(audio_track_name), "Audio track #%d", 1 + (int)audio_track_section_list_ptr->get_num_children());
+
+        auto audio_input_section = create_audio_input_section();
+        List *audio_input_section_ptr = audio_input_section.get();
+
         auto list = std::make_unique<List>(List::Orientation::VERTICAL);
-        list->add_widget(create_add_audio_buttons());
-        list->add_widget(create_audio_track_track_section());
+        List *list_ptr = list.get();
+        auto subsection = std::make_unique<Subsection>("", std::move(std::move(list)), mgl::vec2f(parent_widget->get_inner_size().x, 0.0f));
+        subsection->set_bg_color(mgl::Color(35, 40, 44));
+
+        list_ptr->add_widget(create_audio_track_title_and_remove(subsection.get(), audio_track_name));
+        list_ptr->add_widget(create_add_audio_buttons(audio_input_section_ptr));
+        list_ptr->add_widget(std::move(audio_input_section));
+        list_ptr->add_widget(create_application_audio_invert_checkbox());
+
+        set_application_audio_options_visible(subsection.get(), view_radio_button_ptr->get_selected_id() == "advanced", *gsr_info);
+        return subsection;
+    }
+
+    std::unique_ptr<List> SettingsPage::create_audio_track_section_list() {
+        auto list = std::make_unique<List>(List::Orientation::VERTICAL);
+        audio_track_section_list_ptr = list.get();
         return list;
     }
 
     std::unique_ptr<Widget> SettingsPage::create_audio_section() {
         auto audio_device_section_list = std::make_unique<List>(List::Orientation::VERTICAL);
-        audio_device_section_list->add_widget(create_audio_track_section());
-        if(type != Type::STREAM)
-            audio_device_section_list->add_widget(create_split_audio_checkbox());
-        audio_device_section_list->add_widget(create_application_audio_invert_checkbox());
-        audio_device_section_list->add_widget(create_audio_codec());
-        return std::make_unique<Subsection>("Audio", std::move(audio_device_section_list), mgl::vec2f(settings_scrollable_page_ptr->get_inner_size().x, 0.0f));
+        List *audio_device_section_list_ptr = audio_device_section_list.get();
+
+        auto subsection = std::make_unique<Subsection>("Audio", std::move(audio_device_section_list), mgl::vec2f(settings_scrollable_page_ptr->get_inner_size().x, 0.0f));
+        audio_section_ptr = subsection.get();
+        audio_device_section_list_ptr->add_widget(create_add_audio_track_button());
+        audio_device_section_list_ptr->add_widget(create_audio_track_section_list());
+        audio_device_section_list_ptr->add_widget(create_audio_codec());
+        return subsection;
     }
 
     std::unique_ptr<List> SettingsPage::create_video_quality_box() {
@@ -531,8 +611,7 @@ namespace gsr {
     void SettingsPage::add_widgets() {
         content_page_ptr->add_widget(create_settings());
 
-        record_area_box_ptr->on_selection_changed = [this](const std::string &text, const std::string &id) {
-            (void)text;
+        record_area_box_ptr->on_selection_changed = [this](const std::string&, const std::string &id) {
             const bool window_selected = id == "window";
             const bool focused_selected = id == "focused";
             const bool portal_selected = id == "portal";
@@ -549,8 +628,7 @@ namespace gsr {
             video_resolution_list_ptr->set_visible(!focused_selected && checked);
         };
 
-        video_quality_box_ptr->on_selection_changed = [this](const std::string &text, const std::string &id) {
-            (void)text;
+        video_quality_box_ptr->on_selection_changed = [this](const std::string&, const std::string &id) {
             const bool custom_selected = id == "custom";
             video_bitrate_list_ptr->set_visible(custom_selected);
 
@@ -569,12 +647,6 @@ namespace gsr {
             record_area_box_ptr->set_selected_item("window");
         else
             record_area_box_ptr->on_selection_changed("", "");
-
-        if(!gsr_info->system_info.supports_app_audio) {
-            add_application_audio_button_ptr->set_visible(false);
-            add_custom_application_audio_button_ptr->set_visible(false);
-            application_audio_invert_checkbox_ptr->set_visible(false);
-        }
     }
 
     void SettingsPage::add_page_specific_widgets() {
@@ -716,6 +788,16 @@ namespace gsr {
         replay_time_label_ptr->set_text(buffer);
     }
 
+    void SettingsPage::view_changed(bool advanced_view, Subsection *notifications_subsection_ptr) {
+        color_range_list_ptr->set_visible(advanced_view);
+        audio_codec_ptr->set_visible(advanced_view);
+        video_codec_ptr->set_visible(advanced_view);
+        framerate_mode_list_ptr->set_visible(advanced_view);
+        notifications_subsection_ptr->set_visible(advanced_view);
+        set_application_audio_options_visible(audio_track_section_list_ptr, advanced_view, *gsr_info);
+        settings_scrollable_page_ptr->reset_scroll();
+    }
+
     void SettingsPage::add_replay_widgets() {
         auto file_info_list = std::make_unique<List>(List::Orientation::VERTICAL);
         auto file_info_data_list = std::make_unique<List>(List::Orientation::HORIZONTAL);
@@ -754,16 +836,8 @@ namespace gsr {
         Subsection *notifications_subsection_ptr = notifications_subsection.get();
         settings_list_ptr->add_widget(std::move(notifications_subsection));
 
-        view_radio_button_ptr->on_selection_changed = [this, notifications_subsection_ptr](const std::string &text, const std::string &id) {
-            (void)text;
-            const bool advanced_view = id == "advanced";
-            color_range_list_ptr->set_visible(advanced_view);
-            audio_codec_ptr->set_visible(advanced_view);
-            video_codec_ptr->set_visible(advanced_view);
-            framerate_mode_list_ptr->set_visible(advanced_view);
-            notifications_subsection_ptr->set_visible(advanced_view);
-            split_audio_checkbox_ptr->set_visible(advanced_view);
-            settings_scrollable_page_ptr->reset_scroll();
+        view_radio_button_ptr->on_selection_changed = [this, notifications_subsection_ptr](const std::string&, const std::string &id) {
+            view_changed(id == "advanced", notifications_subsection_ptr);
             return true;
         };
         view_radio_button_ptr->on_selection_changed("Simple", "simple");
@@ -828,16 +902,8 @@ namespace gsr {
         Subsection *notifications_subsection_ptr = notifications_subsection.get();
         settings_list_ptr->add_widget(std::move(notifications_subsection));
 
-        view_radio_button_ptr->on_selection_changed = [this, notifications_subsection_ptr](const std::string &text, const std::string &id) {
-            (void)text;
-            const bool advanced_view = id == "advanced";
-            color_range_list_ptr->set_visible(advanced_view);
-            audio_codec_ptr->set_visible(advanced_view);
-            video_codec_ptr->set_visible(advanced_view);
-            framerate_mode_list_ptr->set_visible(advanced_view);
-            notifications_subsection_ptr->set_visible(advanced_view);
-            split_audio_checkbox_ptr->set_visible(advanced_view);
-            settings_scrollable_page_ptr->reset_scroll();
+        view_radio_button_ptr->on_selection_changed = [this, notifications_subsection_ptr](const std::string&, const std::string &id) {
+            view_changed(id == "advanced", notifications_subsection_ptr);
             return true;
         };
         view_radio_button_ptr->on_selection_changed("Simple", "simple");
@@ -933,8 +999,7 @@ namespace gsr {
         Subsection *notifications_subsection_ptr = notifications_subsection.get();
         settings_list_ptr->add_widget(std::move(notifications_subsection));
 
-        streaming_service_box_ptr->on_selection_changed = [this](const std::string &text, const std::string &id) {
-            (void)text;
+        streaming_service_box_ptr->on_selection_changed = [this](const std::string&, const std::string &id) {
             const bool twitch_option = id == "twitch";
             const bool youtube_option = id == "youtube";
             const bool custom_option = id == "custom";
@@ -947,15 +1012,8 @@ namespace gsr {
         };
         streaming_service_box_ptr->on_selection_changed("Twitch", "twitch");
 
-        view_radio_button_ptr->on_selection_changed = [this, notifications_subsection_ptr](const std::string &text, const std::string &id) {
-            (void)text;
-            const bool advanced_view = id == "advanced";
-            color_range_list_ptr->set_visible(advanced_view);
-            audio_codec_ptr->set_visible(advanced_view);
-            video_codec_ptr->set_visible(advanced_view);
-            framerate_mode_list_ptr->set_visible(advanced_view);
-            notifications_subsection_ptr->set_visible(advanced_view);
-            settings_scrollable_page_ptr->reset_scroll();
+        view_radio_button_ptr->on_selection_changed = [this, notifications_subsection_ptr](const std::string&, const std::string &id) {
+            view_changed(id == "advanced", notifications_subsection_ptr);
             return true;
         };
         view_radio_button_ptr->on_selection_changed("Simple", "simple");
@@ -1006,50 +1064,61 @@ namespace gsr {
         return nullptr;
     }
 
-    static bool starts_with(std::string_view str, const char *substr) {
-        size_t len = strlen(substr);
-        return str.size() >= len && memcmp(str.data(), substr, len) == 0;
-    }
-
     void SettingsPage::load_audio_tracks(const RecordOptions &record_options) {
-        audio_track_list_ptr->clear();
-        for(const std::string &audio_track : record_options.audio_tracks) {
-            if(starts_with(audio_track, "app:")) {
-                if(!gsr_info->system_info.supports_app_audio)
-                    continue;
-
-                std::string audio_track_name = audio_track.substr(4);
-                const std::string *app_audio = get_application_audio_by_name_case_insensitive(application_audio, audio_track_name);
-                if(app_audio) {
-                    std::unique_ptr<List> application_audio_widget = create_application_audio();
-                    ComboBox *application_audio_box = static_cast<ComboBox*>(application_audio_widget->get_child_widget_by_index(1));
-                    application_audio_box->set_selected_item(*app_audio);
-                    audio_track_list_ptr->add_widget(std::move(application_audio_widget));
+        audio_track_section_list_ptr->clear();
+        for(const AudioTrack &audio_track : record_options.audio_tracks_list) {
+            auto audio_track_section = create_audio_track_section(audio_section_ptr);
+            List *audio_track_section_items_list_ptr = dynamic_cast<List*>(audio_track_section->get_inner_widget());
+            List *audio_input_list_ptr = dynamic_cast<List*>(audio_track_section_items_list_ptr->get_child_widget_by_index(2));
+            CheckBox *application_audio_invert_checkbox_ptr = dynamic_cast<CheckBox*>(audio_track_section_items_list_ptr->get_child_widget_by_index(3));
+            application_audio_invert_checkbox_ptr->set_checked(audio_track.application_audio_invert);
+
+            audio_input_list_ptr->clear();
+            for(const std::string &audio_input : audio_track.audio_inputs) {
+                if(starts_with(audio_input, "app:")) {
+                    if(!gsr_info->system_info.supports_app_audio)
+                        continue;
+
+                    std::string audio_track_name = audio_input.substr(4);
+                    const std::string *app_audio = get_application_audio_by_name_case_insensitive(application_audio, audio_track_name);
+                    if(app_audio) {
+                        std::unique_ptr<List> application_audio_widget = create_application_audio(audio_input_list_ptr);
+                        ComboBox *application_audio_box = dynamic_cast<ComboBox*>(application_audio_widget->get_child_widget_by_index(1));
+                        application_audio_box->set_selected_item(*app_audio);
+                        audio_input_list_ptr->add_widget(std::move(application_audio_widget));
+                    } else {
+                        std::unique_ptr<List> application_audio_widget = create_custom_application_audio(audio_input_list_ptr);
+                        Entry *application_audio_entry = dynamic_cast<Entry*>(application_audio_widget->get_child_widget_by_index(1));
+                        application_audio_entry->set_text(std::move(audio_track_name));
+                        audio_input_list_ptr->add_widget(std::move(application_audio_widget));
+                    }
+                } else if(starts_with(audio_input, "device:")) {
+                    std::unique_ptr<List> audio_track_widget = create_audio_device(audio_input_list_ptr);
+                    ComboBox *audio_device_box = dynamic_cast<ComboBox*>(audio_track_widget->get_child_widget_by_index(1));
+                    audio_device_box->set_selected_item(audio_input.substr(7));
+                    audio_input_list_ptr->add_widget(std::move(audio_track_widget));
                 } else {
-                    std::unique_ptr<List> application_audio_widget = create_custom_application_audio();
-                    Entry *application_audio_entry = static_cast<Entry*>(application_audio_widget->get_child_widget_by_index(1));
-                    application_audio_entry->set_text(std::move(audio_track_name));
-                    audio_track_list_ptr->add_widget(std::move(application_audio_widget));
+                    std::unique_ptr<List> audio_track_widget = create_audio_device(audio_input_list_ptr);
+                    ComboBox *audio_device_box = dynamic_cast<ComboBox*>(audio_track_widget->get_child_widget_by_index(1));
+                    audio_device_box->set_selected_item(audio_input);
+                    audio_input_list_ptr->add_widget(std::move(audio_track_widget));
                 }
-            } else if(starts_with(audio_track, "device:")) {
-                std::unique_ptr<List> audio_track_widget = create_audio_device();
-                ComboBox *audio_device_box = static_cast<ComboBox*>(audio_track_widget->get_child_widget_by_index(1));
-                audio_device_box->set_selected_item(audio_track.substr(7));
-                audio_track_list_ptr->add_widget(std::move(audio_track_widget));
-            } else {
-                std::unique_ptr<List> audio_track_widget = create_audio_device();
-                ComboBox *audio_device_box = static_cast<ComboBox*>(audio_track_widget->get_child_widget_by_index(1));
-                audio_device_box->set_selected_item(audio_track);
-                audio_track_list_ptr->add_widget(std::move(audio_track_widget));
             }
+
+            audio_track_section_list_ptr->add_widget(std::move(audio_track_section));
+
+            if(type == Type::STREAM)
+                break;
+        }
+
+        if(type == Type::STREAM && audio_track_section_list_ptr->get_num_children() == 0) {
+            auto audio_track_section = create_audio_track_section(audio_section_ptr);
+            audio_track_section_list_ptr->add_widget(std::move(audio_track_section));
         }
     }
 
     void SettingsPage::load_common(RecordOptions &record_options) {
         record_area_box_ptr->set_selected_item(record_options.record_area_option);
-        if(split_audio_checkbox_ptr)
-            split_audio_checkbox_ptr->set_checked(!record_options.merge_audio_tracks);
-        application_audio_invert_checkbox_ptr->set_checked(record_options.application_audio_invert);
         change_video_resolution_checkbox_ptr->set_checked(record_options.change_video_resolution);
         load_audio_tracks(record_options);
         color_range_box_ptr->set_selected_item(record_options.color_range);
@@ -1139,28 +1208,38 @@ namespace gsr {
         container_box_ptr->set_selected_item(config.streaming_config.custom.container);
     }
 
-    static void save_audio_tracks(std::vector<std::string> &audio_devices, List *audio_devices_list_ptr) {
-        audio_devices.clear();
-        audio_devices_list_ptr->for_each_child_widget([&audio_devices](std::unique_ptr<Widget> &child_widget) {
-            List *audio_track_line = static_cast<List*>(child_widget.get());
-            const AudioTrackType audio_track_type = (AudioTrackType)(uintptr_t)audio_track_line->userdata;
-            switch(audio_track_type) {
-                case AudioTrackType::DEVICE: {
-                    ComboBox *audio_device_box = static_cast<ComboBox*>(audio_track_line->get_child_widget_by_index(1));
-                    audio_devices.push_back("device:" + audio_device_box->get_selected_id());
-                    break;
-                }
-                case AudioTrackType::APPLICATION: {
-                    ComboBox *application_audio_box = static_cast<ComboBox*>(audio_track_line->get_child_widget_by_index(1));
-                    audio_devices.push_back("app:" + application_audio_box->get_selected_id());
-                    break;
+    static void save_audio_tracks(std::vector<AudioTrack> &audio_tracks, List *audio_track_section_list_ptr) {
+        audio_tracks.clear();
+        audio_track_section_list_ptr->for_each_child_widget([&audio_tracks](std::unique_ptr<Widget> &child_widget) {
+            Subsection *audio_subsection = dynamic_cast<Subsection*>(child_widget.get());
+            List *audio_track_section_items_list_ptr = dynamic_cast<List*>(audio_subsection->get_inner_widget());
+            List *audio_input_list_ptr = dynamic_cast<List*>(audio_track_section_items_list_ptr->get_child_widget_by_index(2));
+            CheckBox *application_audio_invert_checkbox_ptr = dynamic_cast<CheckBox*>(audio_track_section_items_list_ptr->get_child_widget_by_index(3));
+
+            audio_tracks.push_back({std::vector<std::string>{}, application_audio_invert_checkbox_ptr->is_checked()});
+            audio_input_list_ptr->for_each_child_widget([&audio_tracks](std::unique_ptr<Widget> &child_widget){
+                List *audio_track_line = dynamic_cast<List*>(child_widget.get());
+                const AudioTrackType audio_track_type = (AudioTrackType)(uintptr_t)audio_track_line->userdata;
+                switch(audio_track_type) {
+                    case AudioTrackType::DEVICE: {
+                        ComboBox *audio_device_box = dynamic_cast<ComboBox*>(audio_track_line->get_child_widget_by_index(1));
+                        audio_tracks.back().audio_inputs.push_back("device:" + audio_device_box->get_selected_id());
+                        break;
+                    }
+                    case AudioTrackType::APPLICATION: {
+                        ComboBox *application_audio_box = dynamic_cast<ComboBox*>(audio_track_line->get_child_widget_by_index(1));
+                        audio_tracks.back().audio_inputs.push_back("app:" + application_audio_box->get_selected_id());
+                        break;
+                    }
+                    case AudioTrackType::APPLICATION_CUSTOM: {
+                        Entry *application_audio_entry = dynamic_cast<Entry*>(audio_track_line->get_child_widget_by_index(1));
+                        audio_tracks.back().audio_inputs.push_back("app:" + application_audio_entry->get_text());
+                        break;
+                    }
                 }
-                case AudioTrackType::APPLICATION_CUSTOM: {
-                    Entry *application_audio_entry = static_cast<Entry*>(audio_track_line->get_child_widget_by_index(1));
-                    audio_devices.push_back("app:" + application_audio_entry->get_text());
-                    break;
-                }
-            }
+                return true;
+            });
+
             return true;
         });
     }
@@ -1173,11 +1252,8 @@ namespace gsr {
         record_options.video_height = atoi(video_height_entry_ptr->get_text().c_str());
         record_options.fps = atoi(framerate_entry_ptr->get_text().c_str());
         record_options.video_bitrate = atoi(video_bitrate_entry_ptr->get_text().c_str());
-        if(split_audio_checkbox_ptr)
-            record_options.merge_audio_tracks = !split_audio_checkbox_ptr->is_checked();
-        record_options.application_audio_invert = application_audio_invert_checkbox_ptr->is_checked();
         record_options.change_video_resolution = change_video_resolution_checkbox_ptr->is_checked();
-        save_audio_tracks(record_options.audio_tracks, audio_track_list_ptr);
+        save_audio_tracks(record_options.audio_tracks_list, audio_track_section_list_ptr);
         record_options.color_range = color_range_box_ptr->get_selected_id();
         record_options.video_quality = video_quality_box_ptr->get_selected_id();
         record_options.video_codec = video_codec_box_ptr->get_selected_id();
diff --git a/src/gui/StaticPage.cpp b/src/gui/StaticPage.cpp
index 182464c..5147819 100644
--- a/src/gui/StaticPage.cpp
+++ b/src/gui/StaticPage.cpp
@@ -20,8 +20,9 @@ namespace gsr {
 
         // Process widgets by visibility (backwards)
         return widgets.for_each_reverse([selected_widget, &window, &event, offset](std::unique_ptr<Widget> &widget) {
-            if(widget.get() != selected_widget) {
-                if(!widget->on_event(event, window, offset))
+            Widget *p = widget.get();
+            if(p != selected_widget) {
+                if(!p->on_event(event, window, offset))
                     return false;
             }
             return true;
diff --git a/src/gui/Subsection.cpp b/src/gui/Subsection.cpp
index c97460e..bc75a9c 100644
--- a/src/gui/Subsection.cpp
+++ b/src/gui/Subsection.cpp
@@ -12,12 +12,17 @@ namespace gsr {
     static const float title_spacing_scale = 0.010f;
 
     Subsection::Subsection(const char *title, std::unique_ptr<Widget> inner_widget, mgl::vec2f size) :
-        label(&get_theme().title_font, title, get_color_theme().text_color),
+        label(&get_theme().title_font, title ? title : "", get_color_theme().text_color),
         inner_widget(std::move(inner_widget)),
         size(size)
     {
         this->inner_widget->parent_widget = this;
     }
+
+    Subsection::~Subsection() {
+        if(inner_widget->parent_widget == this)
+            inner_widget->parent_widget = nullptr;
+    }
     
     bool Subsection::on_event(mgl::Event &event, mgl::Window &window, mgl::vec2f) {
         if(!visible)
@@ -32,7 +37,7 @@ namespace gsr {
 
         mgl::vec2f draw_pos = position + offset;
         mgl::Rectangle background(draw_pos.floor(), get_size().floor());
-        background.set_color(mgl::Color(25, 30, 34));
+        background.set_color(bg_color);
         window.draw(background);
 
         draw_pos += mgl::vec2f(margin_left_scale, margin_top_scale) * mgl::vec2f(get_theme().window_height, get_theme().window_height);
@@ -69,4 +74,12 @@ namespace gsr {
         const mgl::vec2f margin_size = mgl::vec2f(margin_left_scale + margin_right_scale, margin_top_scale + margin_bottom_scale) * mgl::vec2f(get_theme().window_height, get_theme().window_height);
         return get_size() - margin_size;
     }
+
+    Widget* Subsection::get_inner_widget() {
+        return inner_widget.get();
+    }
+
+    void Subsection::set_bg_color(mgl::Color color) {
+        bg_color = color;
+    }
 }
\ No newline at end of file
diff --git a/src/gui/Widget.cpp b/src/gui/Widget.cpp
index 8732bd7..66cf193 100644
--- a/src/gui/Widget.cpp
+++ b/src/gui/Widget.cpp
@@ -1,14 +1,15 @@
 #include "../../include/gui/Widget.hpp"
+#include <vector>
 
 namespace gsr {
+    static std::vector<std::unique_ptr<Widget>> widgets_to_remove;
+
     Widget::Widget() {
         
     }
 
     Widget::~Widget() {
         remove_widget_as_selected_in_parent();
-        // if(parent_widget)
-        //     parent_widget->remove_child_widget(this);
     }
 
     void Widget::set_position(mgl::vec2f position) {
@@ -62,4 +63,15 @@ namespace gsr {
     void Widget::set_visible(bool visible) {
         this->visible = visible;
     }
+
+    void add_widget_to_remove(std::unique_ptr<Widget> widget) {
+        widgets_to_remove.push_back(std::move(widget));
+    }
+
+    void remove_widgets_to_be_removed() {
+        for(size_t i = 0; i < widgets_to_remove.size(); ++i) {
+            widgets_to_remove[i].reset();
+        }
+        widgets_to_remove.clear();
+    }
 }
\ No newline at end of file
diff --git a/src/main.cpp b/src/main.cpp
index be2f6d0..395b69a 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -303,7 +303,10 @@ int main(int argc, char **argv) {
     if(exit_reason == "back-to-old-ui") {
         const char *args[] = { "gpu-screen-recorder-gtk", "use-old-ui", nullptr };
         execvp(args[0], (char* const*)args);
+        return 0;
+    } else if(exit_reason == "exit") {
+        return 0;
     }
 
-    return 0;
+    return mgl_is_connected_to_display_server() ? 0 : 1;
 }