Oh yay, this exists! I'd all but forgotten about this, but it's very nice to see you're still continuing this.
Oh, and I could lend a hand for some music; just PM me if you're interested.
I'm generally very interested in getting some help with this! I don't really have much of an idea, right now, of what your music sounds like, though - and I also haven't really decided what direction I'd like to go in with the music for this level. It seems unlikely to find a whole lot of free music that a) fits the game and b) goes well together, so I've been considering making all or at least some of the music myself for a while now. It would have to be very minimalist, of course, as I have zero experience. (And also, something relatively simple would be best for the game, I think. Most of the areas in it aren't huge, so if every area gets its own music, it would probably be best for that music to just be a very short and simple loop.) I also don't know what the appropriate programs/tools would be - unless I actually decide to go with the guitar, that is. I'd have to find out how to record etc. that, though, too.
Do you have a thread for your music here somewhere, so I could have a listen? And when I've done so and think that your stuff might work for my level, I could send you the level and you could see if it inspires you or something? :-)