I don't mind doing any simple and obvious fixes (my email is at the bottom of the home page) but in general I'm not planning to update it any serious way, just host a snapshot of it as it was when it went offline.

As for copyright, I think it's pretty well established by now that by and large, composers and songwriters benefit from having their material where it can be found by performers who go on to generate performance and recording fees. I'll leave the copyright holders to get in touch if they feel the need.