Frank Klepacki - an American musician, video game music composer and sound director - writes on the Petroglyph forum that the Universe at War: Earth Assault Original Soundtrack is now available for download for free:
"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'!"