Merge pull request #937 from MrTheMake/intro-track-start-fix

Don't start a beatmap's track until the intro is done playing

osu.Game/Screens/Menu/Intro.cs

@@ -121,7 +121,9 @@ protected override void OnEntering(Screen last)
 
             Scheduler.AddDelayed(delegate
             {
-                track.Start();
+                // Only start the current track if it is the menu music. A beatmap's track is started when entering the Main Manu.
+                if (menuMusic)
+                    track.Start();
 
                 LoadComponentAsync(mainMenu = new MainMenu());