Audon is a great real-time audio streaming service for the #fediverse! Think Spaces or Clubhouse, and you pretty much got it. You create a room for audio, where other people can listen to you, or just give them the role of speaker as well.

You can easily log in with your fediverse (Mastodon/Calckey/Pleroma) account, create a room, share the link, and you're ready to go!

Check it out at https://audon.space