[MrBuddyCasino]

> preexisting homebrew that will that bridges arbitrary speakers to virtual Airplay devices

Got a recommendation?

[crooked-v]

Some examples, including both software and dedicated hardware options:

https://www.makeuseof.com/tag/4-airplay-receivers-that-are-c...

https://github.com/philippe44/AirConnect

https://www.airserver.com/

[Qerub]

https://github.com/mikebrady/shairport-sync works great. I've been running it for years.