peanut butter is crazy, dude. I clean up record covers all the time - I use lighter fluid to take off marker / sticky residue / stains or WD-40 to take off stickers. Use as little fluid as possible - use a Q Tip. Practice for a little bit on some paperback books or something. I'm not too anal about the condition of most of my games (assuming I didn't pay an arse-load for it online, and I never do) personally. I mean, a beat up CD really sucks but otherwise..