actually, jiggz, i think the point of the question was missed by you too. you can, in fact, use anything that says "CDR" or "CDRW" on it in a computer. here is the difference:
it is the exact same media, but when sony or a company like that makes cdrs that say "audio" on them, the bump the price a little bit so they can give a fraction of the cost to the record companies. They figure, when a consumer buys something that says "audio cdr" they will be illegally copying cds. therefore, to compensate, they give the record companies part of the profits.
there is the actual point of the question