http://www.youtube.com/watch?v=-BAvLYgq5m0

What is this epic orchestral awesomeness? ...and most importantly, can I find it as mp3s somewhere?

It's actually various remixes from various Touhou doujin albums.

You're probably going to have to rip the music from that YouTube video if you want those songs as you're not likely to find all those albums on this forum.

Oh, that sucks. :(