This is a bit of a long shot, but at them end of series 6 when the world has been saved (again) there is a song playing, which is beautiful. i think one of the lines is 'where there is love then peace' is sung by a woman and i really would love it. any ideas
Definitely Prayer Of St Francis. I'm not a Buffy fan but I caught this episode, loved the song, found out what it was, and got it. As far as I know you won't find it on any UK albums, or American ones either as I THINK it was on Japanese import only (at least, that's what I seemed to find out back when I got it)
I ended up getting it on Kazaa within two minutes. I daresay it'll be on Limewire and others too.