Rdio is a music subscription service available in the United States and Canada. It is available as a website and also has clients for the iPhone, Android,BlackBerry and Windows Phone mobile devices, which can play streaming music or cache songs for offline playback. The web-based service also offers a native desktop client app for Mac OS X (with a Windows version to follow), and a cross-platform client based on Adobe Air. Its library has content from the four major record labels, as well as the Merlin Network and the aggregators IODA, INgrooves, The Orchard, IRIS Distribution, and Finetunes. Rdio also offers social networking, allowing users to share playlists and follow others to see what music they listen to. - Source: Wikipedia
