I will definitely be using this. However it is missing some data. For example, filtering on author: aquinas yields nothing, but see https://librivox.org/author/1199?primary_key=1199&search_cat...
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At the moment, I've included audiobooks from popular sources like Librivox, Project Gutenberg, and Lit2Go.
I'm open to suggestions on additional free audiobook sources I could integrate into the site to expand the collection!
For example, you can query using only the first letter, so it's quite easy to quickly cache their entire collection (please don't give them the HN hug of death):
https://librivox.org/ ... api/feed/audiobooks/author/^a
Of course, specify json or something closer to your internal data structures.