Make view-model stop playback

RedBookPlayer/GUI/PlayerView.xaml.cs

@@ -64,9 +64,6 @@ namespace RedBookPlayer.GUI
         /// <param name="path">Path to the image to load</param>
         public async Task<bool> LoadImage(string path)
         {
-            // If the player is currently running, stop it
-            if(PlayerViewModel.Playing != true) PlayerViewModel.Playing = null;
-
             bool result = await Dispatcher.UIThread.InvokeAsync(() =>
             {
                 PlayerViewModel.Init(path, App.Settings.AutoPlay, App.Settings.Volume);

RedBookPlayer/GUI/PlayerViewModel.cs

@@ -118,6 +118,10 @@ namespace RedBookPlayer.GUI
         /// <param name="defaultVolume">Default volume between 0 and 100 to use when starting playback</param>
         public void Init(string path, bool autoPlay, int defaultVolume)
         {
+            // Stop current playback, if necessary
+            if(Playing != null) Playing = null;
+
+            // Create and attempt to initialize new Player
             _player = new Player(path, autoPlay, defaultVolume);
             if(Initialized)
                 UpdateModel();