Added tracking/capturing/restoration of audio playback state and position.

Harmonia.WinUI/MainWindow.xaml.cs

@@ -9,12 +9,14 @@ public sealed partial class MainWindow : Window
     private const string ApplicationTitle = "Harmonia";
 
     private readonly ISessionService _sessionService;
+    private readonly ISessionTracker _sessionTracker;
 
     private bool _isSaved;
 
-    public MainWindow(ISessionService sessionService)
+    public MainWindow(ISessionService sessionService, ISessionTracker sessionTracker)
     {
         _sessionService = sessionService;
+        _sessionTracker = sessionTracker;
 
         InitializeComponent();
         InitializeTitleBar();
@@ -57,6 +59,7 @@ public sealed partial class MainWindow : Window
 
         args.Handled = true;
 
+        _sessionTracker.Capture();
         await _sessionService.SaveAsync();
 
         _isSaved = true;