Playlistnow.fm is a social network based on music and playlists, powered by last.fm and youtube. Source code is now open - may it make someone happy :D But be careful, it was done on very very low budget and since we didn't have a business model it has not been maintained ... good luck !! Open an issue if you need help I'll do my best :D Also: domain name is for sale, it is very well ranked on google (over 8 million indexed pages)