Rhapsody
The streaming-music world is fragmented. You have Spotify, but your friend has Rdio. Meanwhile your brother has Rhapsody. None of you can share music with each other unless you create another account on another service. Rhapsody wants to fix that problem via Twitter Cards and maybe pick up some more customers on the way. Today, Rhapsody announced that it would let its subscribers share music via Twitter Audio Cards to anyone that wants to listen. Anyone that clicks on the card that appears in their Twitter timeline will be able to listen to the entire song for free, not just a 30…

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