Multiroom audio integration

I’d like to see multiroom audio integrated in HA/Hass.io. It would be great if I can connect multiple wireless speakers (via airplay, dlna and bluetooth) and create an aggregate device “home speakers” where I can send for e.g. spotify or see it as a unique device in airplay menus.

Consider https://home-assistant.io/components/media_player.snapcast/

This is awesome! Maybe integrated inside hass.io. If I’m not wrong this must be installed on a separate device?

The server can be installed on the same machine running HASS. The clients are usually on their own PI or similar.

ok and what about bluetooth pairing with hass.io?