I give blanket permission for podfic, remixing or other transformation of any of my podfic or writing. Re-pods are awesome and I'd love it if anyone re-podded anything I've already recorded! Please let me know if you do, so I can link to it.
Many of my works (mostly in hockey rpf) carry blanket permission from the author, and where they don't I'm of the opinion that the original author's permission stands for further transformative works. If you're not comfortable with that then please feel free to get in touch with them anyway, or ask me about how I contacted the author.
Also frecklebombfic on other fannish sites.