I‘m part of a small group of hobbyist producing an audio play podcast for fun. We don‘t make any revenue - no ads, no donations, no fees, no affiliate links. We have around 600 listeners.
Now we have come across a novella from the 60s which we would like to adapt into an audio play. The copyright owners seem to be the author‘s heirs, represented by an estate representative.
What would be a good way to ask the rights holders for permission?