Odiguous is a short (29 sec) soundtrack which sounds pretty good. I used BeepBox to make it.
odiguous.mp3 is just the bit that loops, without any looping in the file.
odiguous-long.mp3 loops 4 times, I would recommend you use it if you want to play it on repeat as if you loop the other file it stops for a sec.
Torrent files for both are available.