Let's make a trailer for the Fifth World!

I want to make a trailer for the Fifth World. I want to post it on Vimeo, and maybe use it on the front page of this website, too.

I've started looking for public domain and Creative Commons video. I'll also need to find some Creative Commons music to use for the soundtrack. If you know any samples that you think would work, or resources where I might find some, please post them in this thread.

I also wanted to present the rough draft for the voice-over here, in case anybody had ideas on how to improve it.

Humanity has outlived civilization. In this new world, the old ways could not survive. Generations of feral tribes have each left their mark, each finding some way to make the world a better place. Those honored ancestors leave a calling to their children, to follow in their footsteps, to continue the work of creation, to make the world an even better place. At last, humanity has come home to a more-than-human world.