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 to me then to see it completely integrated into the rest of team's hard work on this title, in the name of creating a fun experience for everyone. This game is definitely the most unique rts I have worked on to date and I'm proud to be a part of it on all audio fronts. Thanks to all of the community - Keep rockin'!"
We can only concur and hope that you, indeed, keep rockin'.