Stop the player first

QuickPlay/MpdPlayer.cs

@@ -27,6 +27,7 @@ namespace QuickPlay
             } }        
         public async Task Play(IPlayable song)
         {
+            await mpd.SendAsync(new MpcCore.Commands.Player.Stop());
             await SetReasonableOptions();
             await mpd.SendAsync(new MpcCore.Commands.Queue.ClearQueue());
             await mpd.SendAsync(new MpcCore.Commands.Queue.AddToQueue(song.Metadata.filePath));