It works for me. Maybe I had to make some modifications, I could look it up. It's a very simple script

edit: It's due to it being a really old version of oggify. Try this one:

https://github.com/kescherCode/oggify

It supports episodes:

https://github.com/kescherCode/oggify/blob/master/src/main.r...

You can even download whole playlists with it.