Google Music Launches With Sharing, Exclusive Content

As expected, Google unveiled its Music store and the expansion of its cloud service-it's pulling out all the stops to compete with the leader, Apple's iTunes. Google has three of the four music labels on board-Sony, Universal, and EMI-all but Warner Music. Now consumers will be able to purchase millions of songs via music.google.com and through the Android market, with 90 second free previews.