got tune-assistant-server (tas) airplay2 working. simultaneously sending from airplay2 to:

3x airplay2 devices
2x sendspin devices

All perfectly synced

all powered by blastcast: a new rust library i built that speaks sendspin,airplay,airplay2 and keeps them all in sync. As far as i know this is the only working implementation that can do this.

https://github.com/jb55/blastcast