audiofeeds.org is a music oriented site. They have a topic list oriented by broad music categories, and that probably works for a music oriented site.
They have a notice saying they'll probably remove the registered user feature. It seems most users are just browsing for feeds rather than doing anything like collecting "favorite" postings. That's an interesting factoid which suggests it's probably not worthwhile allowing users to register.
The page for an individual feed has the overview description, and then for each item in the feed it only shows the title. There is no description for the feed items. The link attached to the title goes directly to the media content.