Flitting around the web just I tripped over this page on Quantum Mechanix site. A cd of songs called Got to Fly, by a singer called Marian Call. Being both a singer and a song writer, PLUS a Firefly and Battlestar fan led her to write some songs based on her favourite Firefly and BSG folks. I really like the sound of them from the samples on the page! Go listen, see what you think. There is also one called "I'll still be a geek after nobody thinks it's chic."
QM have produced the cd. They will be on sale for the first time at the forthcoming Firefly/SG1 con in Burbank, and after that only from the QM site. Oh, and she will be singing there as well! She has other, more general music out as well, but of course being a Browncoat is what caught my eye!
http://store.quantummechanix.com/Got-to-Fly-Geek-Tribute-Album-by-Marian-Call_p_1-53.html