Rdio:流媒體音樂服務開發網是一個致力於流媒體音樂應用開發的公司，Rdio擁有眾多的客戶端，桌面版、移動版，就連你的客廳播放器都可以使用，Rdio能讓你與音樂永不脫節，隨時隨地都能聽到最新最潮的音樂。

最新版的Rdio在視覺效果上也有很大的改善，UI做得更加直接和美觀，不過個人感覺這個介面怎麼看怎麼都和iTunes有點像，桌面版應用的左邊是播放列表，使用者可以隨意拖動自己的音樂到任意列表中，建立和管理播放列表也變得非常方便，列表管理也是使用者呼籲了很久的，這個版本終於有所改善。

Rdio is the ground-breaking digital music service that is reinventing the way people discover, listen to, and share music. With on-demand access to over 18 million songs, Rdio connects people with music and makes it easy to search for and instantly play any song, album, artist or playlist without ever hearing a single ad. Discover what friends, people with similar tastes, recording artists and more are listening to in real-time and share across Twitter and Facebook. Build a digital music collection that’s available everywhere – on the web, in-home or in-car, on an iPad or smartphone, and even offline.

Launched in August 2010, Rdio is headquartered in San Francisco and was founded by Janus Friis, one of the creators of Skype. Available in more than a dozen countries all over the world, Rdio is funded by Atomico, Janus Friis through his investment entities, Skype and Mangrove Capital Partners.