if you’re paying attention to apple’s event you just heard about iTunes 8 and the genius feature. Basically it makes smart playlists based on the iTunes user base and your preferences.
Pandora, Last.fm, iLike and many others already do this. Big Deal. We were doing this at Launch music 8 years ago. It doesn’t really add much value to the music sales ecology. Very little.
It can’t find you music you haven’t heard that you will like. None of them can. A group/artist has to be popular and a classified entity before it will get mixed in. These automatic collaborative filters can’t solve that problem for people, probably ever.
Also, is this a feature that we all really need? is auto playlisting really a big concern we have? half the fun of having a huge library is the ACT of making play lists. Seriously. It’s like channel surfing… imagine if I had automated channel surfing. the fun is in the surfing.