It's been a long time because I'm swamped with work. But here's something useful for anyone set out to make a small film or a project with their students - there's a big artist out there who is willing to share his music for free.
Moby introduces mobygratis.com from Moby on Vimeo.
You'll have to log in and ask for a licence, but I think it's worth it. :)
Apart from that there's this: http://freemusicarchive.org/about/ - an abundance of good music just waiting to be discovered.
I've found my soundtrack and wish you all the luck in finding yours. :))
Love to all,