Since it doesn't seem against the rules to be posting this, I'll just leave this here:
http://nice-boat.info/th13ost.7zTracks are tagged with Japanese, encoded to MP3 at VBR V0 and in the order I found them in thbgm.dat (and no, there's no trance version of
's theme). Was too lazy to make them loop and fadeout. Enjoy!
Obligatory legal disclaimer: The assets are property of the owner (ZUN) and, in the event of a cease and desist notice issued, I reserve the right to remove the file at the link specified without prior warning.