I'm just bitter that my Macintosh computer was never compatible with the illegal shareware sites. You're probably right.
I had an Macintosh laptop that lasted 7 years. In that time, I borrowed PC laptops for specific activities, and both blew up the mother boards while I had them. I swear... I did nothing wrong... I think.
You can work around that, though. As I pointed out in #86, one way to do this is to burn the non-iTunes tracks to a CD and then rerip them into your iTunes library. It's a bit of a pain, but it does work.
Other players won't accept the AAC tracks you purchase from the iTunes store either. I honestly think that this has as much to do with the manufacturers and the music services putting in enough basic anti-piracy protection to convince the record labels to continue letting them sell digital music, as it has to do with forcing consumers to only shop at their sites.