Found it. Emule is your friend.
(Yes, I know downloading is bad. But for annoyingly complicated reasons I can't buy things online, and this was the only way I had of acquiring the song).
I know there are heaps of people searching like mad for this song, so if you can't find it anywhere, give me a profile shout and I'll help you get it.
(This is an absolutely haunting, brilliant song, and needs as many fans as possible) :p