I love the internet.
You can get pretty much anything you need on the internet, provided you're willing to be a little flexible. I'm recording an audio book trailer (still hoping to shoot a video one as well, but we'll see) and needed music. Sure enough, the wonderful Kevin McLeod has an entire site packed with high-quality, royalty free music.
Kevin, I cannot thank you enough.
Of course, that flexibility I mentioned comes in when I actually select a piece of music I want to go along with the audio trailer. The music, not the words, really determine the mood of the trailer, and I will need to change my delivery to make them work together instead of clash. No matter. I'm sure that somewhere within that library of work I can find something to match my tastes and deliver the proper feel.
It makes me realize, though, just how large a support network I'm going to need if I want to do this more often and with higher quality. Artists, actors, musicians... and that's just for the trailers.