I'm trying to transfer an mp3 file from my computer (Catalina) onto my iPhone (iOS13). The file is a podcast and I would like to listen to it in the Podcast app. Unfortunately, the Podcast app won't allow me to import mp3 files.
In the past I would add the file to iTunes and then changed the "media kind" from music to podcast. But that option is not available in the Music app. When I try to change the media kind the only option is music.
How do I add an mp3 file to Podcasts? Or even add my podcast to Books as an audiobook?