Petroglyph are in that seasonal spirit, and released a three (COUNT'EM!) disc soundtrack of Frank Klepacki's music for the game, in a single 8 Imperial Peggles download. Frank, who you may know from Dune 2 and Command and Conquer says: "I hope you enjoy listening to this soundtrack as much as I enjoyed creating it for Universe At War: Earth Assault. Nothing is more gratifying…