Siren - The Illuminati (Deus Ex Credits song) 

thanks. I just can't understand - in the game, when this song (conspiravision) plays (when enter the specific cheat) the first 2 seconds of the melody are repeated 4 times, and when I'm listening it with a tracker or ModPlayer, they are not repeated.

I'm not sure what song you are referring to. There is a complete song list on wikipedia if you don't have the name, just search for deus ex.

Ok, I have that one. I will add it soon.

how about the quotes music?