Rdio

Rdio has millions of songs, from massive hits to rare gems to cult classics, with more added every week. It’s more music than you could listen to in a lifetime. Find what to listen to next by following friends, tastemakers, influential critics and artists themselves. Check out the most popular albums in your network or explore curated playlists. Build a collection of your favorites, so they’re always close at hand, and share the music you love with the people who might love it next.

Availability
Rdio is an ad-free music subscription service available in the United States, Canada, United Kingdom, France, Germany, Brazil (as Oi Rdio), Australia, Spain, Portugal, Denmark, Estonia, Finland, Sweden, New Zealand, The Netherlands, and Belgium.

It is available as a website and also has clients for the iPhone, iPod Touch & iPad, Android, BlackBerry, and Windows Phone mobile devices, which can play streaming music or cache songs for offline playback. There are also clients for the Roku and Sonos systems. The web-based service also offers a native desktop client app for Mac OS X and Windows.

Its library has content from the four major record labels, as well as the Merlin Network and the aggregators IODA, INgrooves, The Orchard, CD Baby, RouteNote, IRIS Distribution, BFM Digital, Finetunes, and Catapult. Rdio also offers social networking, allowing users to share playlists and follow others to see what music they listen to.

Rdio was created by Skype founders Niklas Zennström and Janus Friis and left private beta testing on 3 August 2010. The founders were also behind file sharing network Kazaa.

Free accounts
New users will automatically get Rdio Free for up to 6 months on their computers, but you’ll need to subscribe to use Rdio on your smartphones, tablets and home media devices.