Audio content in RSS feeds?

I’m trying to move my current web platform over to Ghost, and have hit some trouble with audio files for a podcast feed.

Looking at the available documentation, it seems like the only way to have a syndicateable RSS feed is if you host your audio files elsewhere, then just link them in a hacked metadata field. Is that right?? I feel like I must be missing something as it’s so clunky compared to the rest of Ghost…

What I’d like to do is link the audio file in the RSS feed from an audio card on the post, ideally directly in the Handlebars template, but not-so-ideally by finding the URL and adding it to the Facebook Description field, as per the doc above. Are either of those possible?

Podcasting is quite a big part of my content and splitting it out onto a different platform is very much something I want to avoid.