Top chap that he is, John August has been running a competition on his blog/official web site for The Nines, where he’s made footage available for people to download and edit into a trailer.
Here’s my attempt:
Check out the forum at lookforthenines.com to see what everyone else has done. It’s fascinating to see all the different takes on the material.
I got the music from Kevin MacLeod at incompetech.com. He has a load of excellent royalty free music there which is definitely worth checking out.