Sprint has just announced the availability of the HTC Bluetooth music adaptor for wirelessly streaming music from your phone through your car stereo speakers. It’s a fairly expensive adaptor at $59.99 and considering it plugs into a 3.5mm aux port, it’ll leave you wondering “why not just buy a cheap aux cable?”

Earlier in the month, Google announced they would allow additional Google Play content such as books and movies to be purchased using carrier billing. Today, that feature has gone live for Sprint customers who originally could only purchase apps via carrier billing. As it stands, every major carrier other than Verizon appears to have support for carrier billing.

Turntable.fm has finally come to Android, allowing you to join in and battle your friends for virtual DJ supremacy. Turntable.fm allows you and your friends to take turns playing DJ to a virtual room of listeners. Listeners get to vote whether the song is awesome or lame and if it receives too many lame votes, it gets skipped. It’s a great way to discover new music and have fun as you chat with friends and listen to an eclectic mix of music.

According to reports from Twitter, the music subscription service Rdio, appears to have secretly launched in the U.K. and France. While Rdio has yet to chime in on the subject, users in those locations are now able to sign up for a free 7-day trial of unlimited listening. Everything seems to work, although I’m hearing quite a few people in the U.K. are unable to stream or download a significant number of albums (probably why we haven’t heard an official announcement from Rdio).

A new music service by Microsoft is expected to rear its face at E3 and should give us a better look into the “Spotify-like” Zune replacement code named “Woodstock.” While we generally wouldn’t be too interested in Microsoft news, the new service is reportedly going to be cross-platform and will indeed be available for Android and iOS.