I’ve created a new project, which I’ve dubbed the touhou music database. Well, it doesn’t actually contain the raw MP3 files or anything, however. I collected the track listings of over 1200 touhou music/remix albums and entered them into a database. Given the name of a song, you can find what albums it can be found on.
Also, when you view a track’s page, I attempt a search of Youtube to see if the track can be found on Youtube, so you can immediately find music videos for most of the more popular songs! Additionally, I have a page that shows the some of the most recent Touhou music videos from Youtube. I love the Youtube data API.