At first blush, Pulselocker looks very much like any streaming music service you've seen before, with an iTunes-like interface that combines playlist creation and music search with streaming and local playback. What's different is the technology that surrounds the local files for the music you download. As with other services, Pulselocker lets you store music on your computer for playback when offline — but the critical difference is Pulselocker's music files can be made available in DJ apps like Serato and Traktor.
Pulselocker launches an innovative new take on streaming music for DJs | The Verge