For the people wondering why it's not on steam.
#1UbersuntzuPosted 9/17/2010 11:03:05 PM There's a song that the
owner (not sure if it's the band or the record label) wanted to
use to renegotiate higher royalties in digital distribution.
Eidos never bothered to take it out, so until they deal with
that (if they ever do) it stays off Steam. I can't remember the
name of the band or the record label, but I got this info off
the Steam forums so you should be able to find it there. Tenchu
Wiki