I was looking at something like that. It doesn’t implement activitypub, but you can host multiple radio stations. I’ll make a website to put all these radios together and I’ll use AzuraCast as “backend”

Yes, I was looking for something like this. I think there isn’t a project like funkwhale or castopod to self host a web radio, I think I’ll start working on it. Does anyone have any advice to make this project possible?