Audon: Open-Source and Self Hosted Mastodon Spaces (Twitter Spaces Clone)

It appears that the audio broadcasting is delegated to a proprietary product: https://livekit.io/

Is there any way to host this with only open source software?

Souce code: https://codeberg.org/nmkj/audon License: AGPL v3 How to use audon(Japanese): https://songbird.cloud/@nmkj/109492502045953554