Thought it might be a good idea to post this here.
I've collected and converted most if not all of the Firefall music track and made them available over at https://rawr4firefall.com/research/soundtrack
For completeness-sake, I've also added the official soundtrack that once came bundled with the Digital Deluxe package and I added some fan-made tracks related to Firefall.
Enjoy and let me know if there's something missing, I guess you guys would know. 