- Fixing bug with Music Player skipping to the next song when selecti…

…ng the Stop option

MixItUp.WPF/Services/WindowsMusicPlayerService.cs

@@ -307,7 +307,7 @@ private async Task PlayBackground(WaveOutEvent waveOutEvent, int songIndex)
                 }
                 waveOutEvent.Dispose();
 
-                if (this.currentSongIndex == songIndex)
+                if (this.currentSongIndex == songIndex && this.State == MusicPlayerState.Playing)
                 {
                     await this.Next();
                 }