I've been having trouble finding some of the songs that weren't on the main soundtrack for the movie. Some of the songs, like the Pixies' one at the end of the movie weren't on the official soundtrack!

I found a liste of the other songs that weren't on the official soundtrack along with some albums link

Here's a liste of them:

Svarga par Vas
Goin’ Out West par Tom Waits
No Love, No Nothin’ par Marlene Dietrich
Where is My Mind? par The Pixies

Like I a dit there is a longer liste on that site but these are the only ones toi can actually find on other albums.