TASK 4 audio fixes round 2: dB-scaled meters, game bar moved into the preview, Notepad About button replaced by the logo → in-app About — AudioLevelMeter.ToDisplay maps -60..0 dBFS onto 0..1 (real speech/game RMS ~0.01..0.1 linear left the flat scale dead; both meters now scale through it before volume); the game audio bar moved OUT of the footer (back to two rows) and is now a bottom-center dark chip overlaid on the preview window — monitoring UI only, never on the live output; the top-bar About button (opened THIRD-PARTY-NOTICES.txt in the OS viewer) removed, the ytLlive wordmark now opens the in-app About overlay, and task 21 queued (real logo + creator-hub About with premium/coffee/socials links + in-app scrolling licensing panel) — 169 tests passing, 0 warnings

MainWindow.xaml.cs

@@ -1,7 +1,5 @@
 using System.Collections;
 using System.ComponentModel;
-using System.Diagnostics;
-using System.IO;
 using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Input;
@@ -145,21 +143,6 @@ public partial class MainWindow : Window
         }
     }
 
-    private void AboutButton_Click(object sender, RoutedEventArgs e)
-    {
-        // LGPL/BSD/MIT notices ship next to the exe; open in the OS text viewer.
-        var path = Path.Combine(AppContext.BaseDirectory, "THIRD-PARTY-NOTICES.txt");
-        if (!File.Exists(path)) return;
-        try
-        {
-            Process.Start(new ProcessStartInfo(path) { UseShellExecute = true });
-        }
-        catch (Exception ex)
-        {
-            AppLog.Write(ex, "About: failed to open THIRD-PARTY-NOTICES.txt");
-        }
-    }
-
     private void AddSourceButton_Click(object sender, RoutedEventArgs e)
     {
         if (sender is Button { ContextMenu: { } menu } button)