@dave excuse my ignorance, but I’m not 100% sure what enclosures are? I tried to look it up but still I’m a little unclear on what your asking.
@dave Yes, they host the file itself, they do have a 45MB file size limit. But there is no download limit. It's a very simple setup, but should work. Also I can back up the entire thing in github, which is built into microblog. Here is their little podcast info page. https://help.micro.blog/t/podcasting-with-micro-blog/82
Intended for all stake holders of podcasting who are interested in improving the eco system