I've been altering the graphics of Donkey Kong for NES via Tile Layer Pro. At first it was going fine but then after awhile, when I'd go to test the game out, I started to notice the sound/music getting more and more messed up. Instead of hearing the proper sounds there are just random sounds played constantly. Have I done something wrong? Is this a common problem? I hacked Super Mario Bros a long time ago with Nesticle and never had that problem. Thanks so much!