From Music Hack Day
GitJay is for git backed playlists, Supporting Rdio and Github together.
 About the hack
Playlists are the Mixtape of the 21st century. Sharing and editing playlists isn't terribly easy. This isn't terribly easy, but it's a step up. We sync playlists from Rdio to Github and back. You can add tracks to your playlist by editing in Rdio, or editing your playlist.json file in your git repo and pushing to master.
 What APIs, tools or kit did you use?
Rdio, Github, Python, Django
Code isn't yet available, Contact David or Issac for any questions about our hack.