Sandisk the 2nd largest seller of MP3 players in the United States, announced a partnership with Yahoo! Music.

The partnership pairs SanDisk’s new wireless MP3 player Sansa Connect with both free and subscription-based services from Yahoo!, allowing yout to stay constantly connected to your music, photos and friends via WiFi, with no PC required.

With a Yahoo! ID you can listen to LAUNCHcast Internet radio, browse Flickr sets and photos, and see what your Yahoo! Messenger friends and other Sansa Connect owners nearby are listening to.
Sansa Connect users with a Yahoo! Music Unlimited To Go subscription are also able to discover and download music, as well as listen to or download tracks their friends are listening to or have recommended.
This partnership enhances the appeal of their Connect player quite a bit and further distances it from the Microsoft Zune player. If you are not hooked on iTunes a Sansa Connect with a Yahoo! account is a hot alternative to the Apple ipod music world.

More details in this Sandisk press-release.
See also this new Sandisk Sansa Connect Review. You can pre-order the Sandisk Sansa Connect from Amazon.com.