TASK 24 follow-up: TRAX button moved into the game audio bar, left of the 'Desktop Audio' label in the preview overlay (the creator's follow-up pick — the music control sits with the desktop audio controls it rides); removed from the footer's left cluster next to Socials. TraxToolTip now teaches the clicks ('left-click plays/pauses, right-click chooses a track'). Docs in the same commit: TASKS.md TASK 24 item 6, ai.md audio section, ViewModels/index.md. Build 0 warnings, 197 tests passing (no test changes — UI relocation only)

MainWindow.xaml

@@ -765,6 +765,21 @@
                                 Margin="0,0,0,12"
                                 Visibility="{Binding IsGameAudioBarVisible, Converter={StaticResource BoolToVis}}">
                             <StackPanel Orientation="Horizontal">
+                                <!-- TRAX sits left of the "Desktop Audio" label
+                                     (the creator's pick): it rides the desktop
+                                     channel, so the music control lives with the
+                                     desktop audio controls. -->
+                                <Button Style="{StaticResource YtButtonSecondary}" Padding="8,2"
+                                        FontSize="11" VerticalAlignment="Center" Margin="0,0,8,0"
+                                        ToolTip="{Binding TraxToolTip}"
+                                        Click="TraxButton_Click"
+                                        PreviewMouseRightButtonUp="TraxButton_PreviewMouseRightButtonUp">
+                                    <StackPanel Orientation="Horizontal">
+                                        <Ellipse Width="8" Height="8" Fill="{Binding TraxDotBrush}"
+                                                 Margin="0,0,6,0" VerticalAlignment="Center"/>
+                                        <TextBlock Text="TRAX"/>
+                                    </StackPanel>
+                                </Button>
                                 <TextBlock Text="Desktop Audio" Foreground="#a0a0b0" FontSize="11"
                                            FontWeight="SemiBold" VerticalAlignment="Center" Margin="0,0,8,0"
                                            ToolTip="Desktop/game audio via WASAPI loopback (automatic); TRAX music rides the same channel"/>
@@ -863,12 +878,13 @@
                     <RowDefinition Height="Auto"/>
                 </Grid.RowDefinitions>
 
-                <!-- Line 1: Social controls + TRAX on the LEFT (under scenes/sources),
+                <!-- Line 1: Social controls on the LEFT (under scenes/sources),
                      sound meter + volume control CENTERED beneath the preview panel.
                      Audio is KISS: desktop/game audio is automatic (WASAPI loopback);
                      the mic meter is the creator's only footer audio control (the
                      game audio bar lives INSIDE the preview window, overlaid at its
-                     bottom edge while a full-screen game is up). -->
+                     bottom edge while a full-screen game is up, and carries the
+                     TRAX button left of its "Desktop Audio" label). -->
                 <Grid Grid.Row="0">
                     <Grid.ColumnDefinitions>
                         <ColumnDefinition Width="220"/>
@@ -876,14 +892,12 @@
                         <ColumnDefinition Width="300"/>
                     </Grid.ColumnDefinitions>
 
-                    <!-- Social controls + TRAX: centered under the scenes/sources
+                    <!-- Social controls: centered under the scenes/sources listboxes -->
-                         listboxes. TRAX rides the desktop/game audio channel, so
-                         it lives in the left cluster, away from the mic meter. -->
                     <StackPanel Grid.Column="0" Orientation="Horizontal"
                                 HorizontalAlignment="Center" VerticalAlignment="Center">
                         <Button Command="{Binding OpenSocialDialogCommand}"
                                 Style="{StaticResource YtButtonSecondary}" Padding="12,4"
-                                FontSize="11" VerticalAlignment="Center" Margin="0,0,8,0"
+                                FontSize="11" VerticalAlignment="Center"
                                 ToolTip="Add or manage your social handles">
                             <StackPanel Orientation="Horizontal">
                                 <Ellipse Width="8" Height="8" Fill="{Binding SocialBarDotBrush}"
@@ -891,21 +905,6 @@
                                 <TextBlock Text="Socials"/>
                             </StackPanel>
                         </Button>
-                        <!-- TRAX (TASK 9): free background music. Dot: green = playing,
-                             yellow = loaded/stopped, red = no track. Left-click toggles
-                             play/pause (opens the picker when no track); right-click
-                             always opens the picker. -->
-                        <Button Style="{StaticResource YtButtonSecondary}" Padding="12,4"
-                                FontSize="11" VerticalAlignment="Center"
-                                ToolTip="{Binding TraxToolTip}"
-                                Click="TraxButton_Click"
-                                PreviewMouseRightButtonUp="TraxButton_PreviewMouseRightButtonUp">
-                            <StackPanel Orientation="Horizontal">
-                                <Ellipse Width="8" Height="8" Fill="{Binding TraxDotBrush}"
-                                         Margin="0,0,6,0" VerticalAlignment="Center"/>
-                                <TextBlock Text="TRAX"/>
-                            </StackPanel>
-                        </Button>
                     </StackPanel>
 
                     <!-- Mic meter + volume: centered under the preview panel -->

TASKS.md

@@ -734,14 +734,15 @@ The creator reviewed the TASK 9 build and filed 8 issues. All fixed in one branc
 3. ✅ **TRAX played once then stopped** — `MusicPlayer.OnPlaybackStopped` only looped when
    `Position >= Length`, unreliable for `MediaFoundationReader`; now any clean stop
    (`e.Exception == null`) rewinds + replays; only errors/explicit stops surface via `PlaybackEnded`.
-4. ✅ **TRAX/MIC buttons swapped** — the footer's mic cluster is now MIC + meter + mute + volume; TRAX
+ 4. ✅ **TRAX/MIC buttons swapped** — TRAX no longer sits between MIC and the (mic-specific) meter;
-   no longer sits between MIC and the (mic-specific) meter.
+    the footer's mic cluster is MIC + meter + mute + volume.
  5. ✅ **Mic source persists across restarts** — `LayoutStore` gained a `Settings` key/value table
     (`SaveMicSourceName`/`LoadMicSourceName`); the VM saves on pick and restores before the mixer's
     first `Start`, so a restart reconnects the same already-vetted device (green dot) or reports it
     missing (yellow) instead of falling back to the default endpoint.
-6. ✅ **TRAX moved right of Socials** — both centered under the scenes/sources listboxes (footer line
+ 6. ✅ **TRAX moved into the game audio bar** — left of the "Desktop Audio" label in the preview
-   1, left cluster).
+    overlay (the creator's follow-up pick), no longer in the footer; its tooltip teaches the clicks
+    ("left-click pauses/plays, right-click chooses a track").
 7. ✅ **Backdrop's icons shifted right** — the trash button's `Collapsed` released its column; a new
    `HiddenBoolToVisibilityConverter` keeps the slot reserved (`Hidden`), so edit/eye stay in their
    fixed columns for every source row.

ViewModels/MainViewModel.cs

@@ -523,8 +523,8 @@ public class MainViewModel : ViewModelBase
             : BarOffBrush;
 
     public string TraxToolTip => _musicPlayer.TrackName != null
-        ? $"TRAX: {_musicPlayer.TrackName} — click to {(IsMusicPlaying ? "pause" : "play")}"
+        ? $"TRAX: {_musicPlayer.TrackName} — left-click {(IsMusicPlaying ? "pauses" : "plays")}, right-click chooses a track"
-        : "No track — right-click to choose background music";
+        : "No track — left-click or right-click to choose background music";
 
     /// <summary>Left-click on TRAX: no track → pick one; otherwise toggle play/pause.</summary>
     public void TraxLeftClick()

ai.md

@@ -418,11 +418,11 @@ devices, no timers).
   and let tracks play once then stop). The desktop/game bar scales it locally via `LocalGain` (the VM's
   `UpdateTraxLocalGain` runs on every `GameAudioVolume`/`GameMuted` change and on TRAX load), so the
   creator **hears** the game volume slider and mute work on the music in the headphones — matching the
-  stream, where it rides the loopback channel ducked with the game. No third mixer input. Footer
+  stream, where it rides the loopback channel ducked with the game. No third mixer input. The footer
-  **TRAX** button, relocated next to **Socials** in the footer's left cluster (centered under the
+  **TRAX** button lives **inside the game audio bar** (in the preview overlay), **left of the
-  scenes/sources listboxes) so it no longer sits between MIC and the mic meter: status dot (**red** no
+  "Desktop Audio" label** (the creator's pick — it rides the desktop channel, so the music control
-  track / **yellow** loaded stopped / **green** playing) + "TRAX"; **left-click** toggles play/pause
+  sits with the desktop audio controls): status dot (**red** no track / **yellow** loaded stopped /
-  (opens the in-app picker via `OpenFileDialog` when no track is loaded); **right-click** always opens
+  **green** playing) + "TRAX"; **left-click** toggles play/pause (opens the in-app picker via `OpenFileDialog` when no track is loaded); **right-click** always opens
   the picker (`TraxButton_PreviewMouseRightButtonUp`, `e.Handled = true`, code-behind pattern); tooltip
   shows the loaded/playing track name or "No track — right-click to choose background music". The picked
   track persists via **schema v9** single-row `Music` (`TrackPath`/`IsEnabled`) in `LayoutStore`. Known