This add-on exposes configured Music Assistant speakers as AirPlay 2 targets. There is a time delay in the bridge, so while it does support multi-room streaming, it will not be synchronised.
Add this repository to Home Assistant: Settings > Add-ons > Add-on Store > menu (top right) > Repositories, then add the URL below and install the AirPlay to Music Assistant Speaker Bridge add-on from the store:
https://github.com/APIUM/ha-airplay-ma-bridge
You can also add it manually by copying the airplay_ma_bridge folder into
/addons on the Home Assistant OS host, reloading the add-on store, and
installing it from the Local add-ons section.
See the add-on's README for configuration.
Built on the great work of shairport-sync, ffmpeg and Icecast.