Currently most of the tracks come from YouTube and SoundCloud, but there are plans in the works to add Yahoo Music, Myspace Music, Bandcamp and others.

CNN: Anontune: the new social music platform from 'Anonymous'

Adding inactivity to injury, this is especially true in locations where many people exercise accompanied to music, airplanes (hey, it's hard to return those seats to their upright positions), the New York City subway system, and the streets of cities other than Mountain View, CA. Indeed, most WiFi-friendly environments are also laptop-friendly and thus support access to not only Yahoo Music and its competitors, but high-quality free internet radio from last.fm, Slacker, and others.

ENGADGET: Switched On: Music in the air (Part 2)

Yahoo's music service, which premiered in August, blends personalization and community.

FORBES: On The Cover/Top Stories

Music, perhaps, or photographs from the Yahoo!

FORBES

The music of Vivendi Universal and Sony Music will be available - for a fee - through the Yahoo website, the world's most widely used portal.

BBC: Yahoo's next move

Yahoo groups is dying and a new generation of users will move to the facebook approach (imeem just announced music deal with Warner).

FORBES: Facebook IPO Will Create A Money Machine - A Tech Boom - More Lawsuits

Within an hour after MyWeb 2.0 went up, a user crossed the music with a Flickr slide show--precisely the kind of do-it-yourself content Yahoo wants.

FORBES: Magazine Article