Isopropyl alcohol comes in several forms. Don't use rubbing alcohol; it's only about 70% pure. For plastic/vinyl/rubber applications, be sure it's labelled "99.953% pure" or "anhydrous." Also best for cassette or RTR rollers and tape heads, disk drives, etc.; recording studios buy it by the gallon.   Available at electronics supply shops and medical supply places, and at some pharmacies. Not cheap, but also not destructive. I'm guessing it would work great on CDs, too.

(And don't let it skin on your skin; it's not good for you -- use an applicator.)