The upcoming Hyper 8 release (0.19, probably in a week or two) is going to introduce four different feeds in one go: Atom, Plain RSS, Podcast RSS and Media RSS.
As a visitor on a Hyper 8 site you'll be able to subscribe to the site itself but also selectively to every subcollection and playlist on a site.
In the coming weeks sometime I'll also be implementing audio-only media/formats, with that there will probably also come a feed differentiation that allows people to subscribe to audio-only feeds.
In effect, hyper8 becomes a (video and/or audio) podcasting platform¹ with this as well.
(ノ´ヮ`)ノ*: ・゚ #hyper8
¹ edit - I better put this in quotes: "platform". :)