First off, I want to say I am a huge fan of the Podlove player, I discovered it on a few websites and just had to see who was behind it, because it is amazing. It really does all the things I wish every podcast player did.
I’m posting here because I am working on a specification for Audiobooks for the W3C, which we believe has some potential for podcasts as well, but we’re looking for feedback on our specification. The main problems we are trying to tackle is providing a single manifest format for metadata, reading order, supplemental content, accessibility, and a table of contents. I see many of these features in the Podlove player already, but this specification brings a unified approach to delivering that content.
https://w3.org/TR/audiobooks <-- the first draft of the specification is here. We are updating it this week with some additional information and links to associated specifications. We are also approaching an implementation phase, so are looking for interested implementors who can provide us with feedback!
Please feel free to ask any questions here or comment on our Github repo (https://github.com/w3c/audiobooks). Sorry for the random post, and keep up the awesome work!