Chromecast Audio is dead and discontinued. Sonos is too expensive. The WiiM Mini is the true affordable streamer that does multiroom audio and more.
WiiM Pro AirPlay 2 Receiver, Chromecast Audio, WiFi
Finally, a HiFi alternative to Chromecast Audio: WiiM - RouteNote Blog
WiiM Pro review: The Chromecast Audio Ultra we never got
Reviews for WiiM Mini
WiiM Pro AirPlay 2 Receiver, Chromecast Audio, WiFi
WiiM Pro AirPlay 2 Receiver with Voice Remote
WiiM Pro AirPlay 2 Receiver, Chromecast Audio, WiFi
WiiM's Mini and Pro are the Chromecast Audio's real replacement
Finally, a HiFi alternative to Chromecast Audio: WiiM - RouteNote Blog
Finally good streaming! WiiM Pro and a Schitt Modi 3E 😁 : r
WiiM Pro AirPlay 2 Receiver, Chromecast audio, WiFi Multiroom