04-05-2009, 01:26 AM
I think it has to do with the fact that when CD's first appeared, nobody in the music business foresaw that some day it would be easy to make copies of CD's, so they didn't bother trying to encrypt them or do anything else funny. There are "CD's" that do not conform to the original CD standard, and are actually impossible to play on my iMac; it just spits them out after I put one in.