Since you have undubitably contact to the makers of the movie, could you perhaps ask them if they'll ever make the excellent theme song (by the Fortza choir if my sources are right) available to the gaming community. It sounds like a perfect song for playing Deathwatch to and in fact I suggest, FFG adopts it as its official Deathwatch hymn.

My own inquiring codex pictures about the soundtrack has been sadly (and predictably) unanswered. Still it was worth a try.

Alex