I'm very excited about this, it seems like an excellent idea

One suggestion: a song should have a list of RLs it's used in (maintained by the users of course). It's not meant to discourage reuse of a song, it's just that someone might be less inclined to use a song that's already in a popular RL than one used by less-known RLs. Or something. At least I'd appreciate this information

Or maybe it's not that healthy for the project. Now I can't make up my mind
