There used to be audio scrobbling programs I think they called it that would run on your computer to keep track of what you listened to and publish on a user page and also use the site to get recs, check out what your friends are listening to, etc. I think last.fm fucked up the official client or something but there were a couple open and universal scrobbler that might still work, but they do still only connect with last.fm I don’t think there’s a self host option.