i don't understand this claim. all standard audio cds are in pcm format. I was not clear.
If you download wav or raw pcm files via bittorrent et al the tel-l-tail signature of MP3 encoding can often be found. i.e the files which claim to be rips directly from CDs are in fact decoded low bitrate MP3 files. I would not claim that this is always the case, but in my experiments (testing audio quality assurance software which is designed to detect this kind of thing) I was surprised how common it is. -Steve
