Mopidy plays music from local disk, Spotify, SoundCloud, Google
Play Music, and more. You edit the playlist from any phone, tablet,
or computer using a variety of MPD and web clients.

Vanilla Mopidy only plays music from files and radio streams.
Through extensions, Mopidy can play music from cloud services like
Spotify, SoundCloud, and Google Play Music. With Mopidy's extension
support, backends for new music sources can be easily added.