It's also from "KOTOR." If you can rip the music from the game, then it's the segment entitled "mus_a_100."
Have it start just after Dooku mentions Qui-Gon, and everything syncs up quite well. There's even a "revelation" fanfare when Dooku speaks Darth Sidious' name. Lastly, there's a bit of a tense, militaristic moment when Dooku aks Obi-Wan to join him. The music then becomes quite and serene as Obi-Wan calmly rejects his offer.
Oh yeah, and Trooperman, Jango has two lines in his helmet, the other being, "Don't move, Jedi!"
And guys, how do you edit a post?