When I used Grooveshark in the past, It had a very nice function to create a "Online Radio" that everyone who are listen the same radio, listen to the same music.
Another idea is to have a "Pull request" for Collaborative Playlists. When the not owner add a music, it sends to the playlist owner to approve or not the added music.
Thanks a lot
Hi and thanks for your contribution! Two similar ideas have been suggested here:
Add your kudos and comments there please!