I found some really good stuff here. I think he makes pretty much all the music himself. All CC-licensed donationware. I haven't explored the non-audio parts of the site yet; it seems very extensive.

Yeah, I'm a one-man show pretty much.
The rest of the site is mainly graph papers and some scholarly yet entertaining writings on various things.
Not that I'm a shill for the site.

All the music flies under multiple licenses in case CC doesn't work (and there are many cases where that happens).
Head there to find out more.

I use the Podsafe Music Network, but I always looking for more sources, thanks Enbar.

Kevin, Thanks for commenting, and I will correct the spelling of your name!