Quote:
I believe that, in the future, people will discover new music because their MP3 player tracks which songs are the most-played, then their computer will offer them samples of similar artists the next time they synch.

A friend of mine swears by http://www.pandora.com/
Not synced, but not too far off. I'm sure it's already been mentioned here on the BBS- kind of old news by now.

As Bitt says, though, your music exposure will be limited to that which is similar to what you already know you like.
There's just no substitute for interaction with the real world.