Alex Werner, the programmer of the Shooter couldn't remember the
track and origin of the shooter soundtrack:
http://www.youtube.com/watch?v=ZuA1TwiECRw
One comment solved the riddle:
"It's me or the music of this game sounds pretty similar to Chronologie 4 of Jean Michel Jarre?"
track: http://www.youtube.com/watch?v=JbXC-QZcyBQ