@evanoutloud I just tried to subscribe using the RSS feed and none of the apps I tried will play back the audio. Not entirely sure what would cause that since it obviously plays from Castopod and I don't think the fact that it's m4a should be an issue. Maybe there's a mismatch between the file type you're publishing and the enclosure media type identification?
All right, let's do this! Here's an off-the-cuff personal journal podcast featuring me. Please enjoy and let me know what you think!