I like the idea of this as well. I will see what options I can find for grabbing a few chromecasts once we move in. Thanks!I had a similar setup with volume control in each room and speaker wire going back to a central location.
I thought about implementing this system but ended up getting a Dayton Audio MA1240A12 channel amplifier and 6 Chromecast Audio devices. I see them available for $ 50/each on eBay right now.
Everyone in my family controls them from their Android and IPhone phones and they can be grouped together to play music in multiple zones.
Sent from my SM-G988U using Tapatalk