Rdio raises $17.5M to boost music-streaming service

Rdio differentiates itself through its seamless playback experience. You can listen to music on your computer, pause it, and pick up where you left off on your phone, says COO Carter Adamson. The social aspect of the site lets users see what their friends are listening to and what they play most frequently, and friends can also exchange play lists. It’s worth noting that while other sites like Pandora and Last.