I've completed the game but I still need help... In Dexter's diner the music keeps messing up & repeating itself then the only way to stop that from happening is to go outside the dinner then go back in. If I don't do that when before I do a level, it freezes up when I try to do it and I have to restart the playstation. After I complete a level, I try to go into another one and it just freezes up, but I've tried going outside the diner and going back in, but it doesn't work. There are no scratches on the disc... can anybody please help???