For bootleg premium feeds check out https://jumble.top/

There’s a website called black wolf feed dot top that’s pretty up to date but I would never use it of course.

Some cobbled together bash scripts honestly, and a lot of jumble.top. I've tried other stuff but I don't really listen to podcasts on my computer directly

I only listen podcasts on my iphone but for premium episodes I use a torrent-like app called nicotine. This is not automated as if I dont like the vibe I dont listen the episode lol.

https://github.com/advplyr/audiobookshelf

Stores all your podcasts on the local computer you're running it on, uses an iOS or Android app to allow for remote streaming of those podcasts, and even downloads them to your device for offline listening. I think you can even turn some collections into podcast feeds or share the entries as their own podcast feed, or more simply, you can give people accounts on the system and they get access to the downloaded podcasts too.

I don’t listen to podcasts, but probably Elfeed+Emms would be perfect for this

Edit: here’s a quick guide https://www.draketo.de/software/emacs-tipps#elfeed-emms