Looks like some folk have found a way to extract playlists from people's iTunes 4 players, thus letting anyone see what you have in your iTunes collection — but then some other folk have figured out how to let others download your music — voila, instant p2p app. The burning question is did Apple know about this initially undocumented functionality, and if they did, did they want it to be exposed? Perhaps Apple are attempting to take a stand against the big guns of RIAA, BMI, ASCAP, NMPA, etc.

The discussions:

The apps: