I only have one fic based on a song currently, but I have absolutely no problem with someone wanting to podfic it.

-Your author name: Malkontent
-Where your works are found: Archive Of Our Own
-The type of permission granted: I grant blanket permission for my works to be used transformatively: remixed, sequeled, translated, podficced, made into art or videos, etc. Please link back to the original and give credit.

Eligible stories:

And They Don't Lose Any Sleep at Night - Based on Goodbye Earl by the Dixie Chicks - 2442 words