first one is in-game and the other is original one
yes, thanks, correct now ;)

below is a list of tracks from fallout soundtracks
everything should be ok now.
original soundtrack
1 Metallic Monks
2 Desert Wind
3 A Trader's Life
4 The Vault of the Future
5 Industrial Junk
6 Moribund World
7 Vats of Goo
8 City of the Dead
9 Second Chance
10 Underground Trouble
11 City of Los Angeles
12 Follower's Credo
13 Radiation Storm
14 Acolytes of the New God
15 Flame of the Ancient World
16 Khans of the New California
in-game soundtrack
1 Hub
2 Master Lair
3 World Map
4 Brotherhood of Steel
5 Raiders
6 Vault
7 Desert
8 Vats
9 Glow
10 LA Bone
11 Children of the Cathedral
12 JunkTown
13 Caravan
14 Necropolis
15 Shady Sands
16 Follow
17 Maybe [End Credits]
http://www.last.fm/music/Mark+Morgan/Fallout?setlang=en
http://www.last.fm/music/Mark+Morgan/Fallout+1?setlang=en

That means that my mistake than ;/ I had two list and listening 01 Metallic Monks and comparing it to 02 Vault (except Maybe).
That means that I have to make up to you this mistake somehow and make a promise that until the end of the Fallout week you will get something else as a bonus content to Fallout series.

Unfortunately with Wasteland there are some legal issues. As far as I remember rights are split between two parties. One has rights to the game itself, one only to the title. Which makes getting this title very difficult (though, we will keep on trying).