People are already fed up with CD prices being far too high - charging even more for songs isn't going to fly, especially not with online distribution being much cheaper than CDs are already. And if you're going to end up having to rip your discs to MP3s anyway to listen to them on your iPod, why would you want a new format anyway? CDs work just just as well. Extra copy protection would only make it less appealing, if you can't copy the songs to your iPod. Nobody's going to be buying a new kind of portable player for a new physical medium at this point, especially if that player will only play a single disc at a time as opposed to 30 Gb of compressed music.