my solution to quickly unraveling these pesky shrink wraps:
buy a money clip knife (a small knife that holds your money) so it's always on ya (a key works too), slit the open end (sides if you are weak), wedge fingers in open end, pull and break remaining seals. chuck jewel case, they are worthless, take your book cover and cd and put into a CD album holder.
fire works too, but who has fire on them 24-7, and probably not the best idea considering you want to do this in your car
not everyone has cars, and all smokers have fire with them constantly in the form of a cigarette lighter
well my thought being that usually when you get a CD, you drove to go get it or someone did
oh so yes, always have at least one friend that smokes, got it