Rdio API

Rdio
Choose the music you want to play and listen as much as you want — from the web or your phone, even when you’re offline. Find new music by following what your friends are listening to. No ads. The Web Services API is based on calls made to the Rdio server through HTTP POST requests and allows developers to access Rdio's data. Developers can also incorporate the playback of licensed Rdio music into their web applications. Full length songs are available to Rdio subscribers and trial users; non-users will be able to hear previews of the songs.