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 Review: Best Music Streamer for Most People - CNET
Reviews for WiiM Mini
WiiM Pro AirPlay 2 Receiver, Chromecast Audio, WiFi Multiroom Streamer
Finally, a HiFi alternative to Chromecast Audio: WiiM - RouteNote Blog
WiiM Pro AirPlay 2 Receiver, Chromecast Audio, WiFi Multiroom Streamer, Compatible with Alexa, Siri and Google Assistant, Stream Hi-Res Audio from Spotify, Music, Tidal and More : Electronics
The $219 WiiM Pro Plus brings your hi-fi setup into the streaming age - The Verge
Finally, a HiFi alternative to Chromecast Audio: WiiM - RouteNote Blog
WiiM's Mini and Pro are the Chromecast Audio's real replacement - The Verge
WiiM's Mini and Pro are the Chromecast Audio's real replacement - The Verge
WiiM Mini music streamer review: Audiophile quality for just $99
WiiM's Mini Streamer is a Google Chromecast Audio Sound Improver
Reviews for WiiM Mini
WiiM Pro AirPlay 2 Receiver, Chromecast Audio, WiFi Multiroom Streamer