HEOS, MusicCast, and Alexa will not do what you're asking about. To connect to your GH hub you're limited to GH speakers, which work very nicely for me in my smaller rooms; Sonos speakers, which have only limited GH compatibility, and a Chormecast dongle connected to an HDMI input on an amplifier, which is how I connected my home audio to play in sync with my GH hub.