Beatport.com, which currently offers downloads of beats and songs used by DJs and EDM producers everywhere.
Contrary to what you might thing, the streaming feature is not intended to compete with other streaming services like Spotify as a "jukebox in the sky." Instead its aimed at professional DJs who want to access a library of beats and songs on the fly.
Artists and record labels will be paid if a song is streamed, since this will be a paid service, although the royalty rate has yet to be revealed. Currently the Beatport library is composed of 90% independent label material.
Beatport was purchased by SFX Entertainment in 2013, and the company has steadily tried to revamp the service. It now consists of Beatport Pro, a desktop media manager and player for DJs, and Beatport.com.
This is an application for streaming that hasn't been tapped yet, so it should be interesting to see how well it works in real life with sometimes flakey Internet connections.