Amazon Echo devices now support multiroom audio - The Verge
How to set up an Alexa multi-room audio system with your Amazon Echo smart speakers
Amazon.com: Audio Pro Addon C5A Smart Speaker | Alexa Built-in, Smart Home Speaker | Multiroom, High Fidelity, Compact, Wireless Bluetooth Speaker | Also Good for Outdoor, Home, Camping, Travel, Beach | White : Electronics
How To Use Alexa with Ceiling Speakers For Voice Control & Multiroom A – K&B Audio
How to Use Alexa Multi-Room Audio with a Sound Bar - Yamaha Music
Amazon.com: WiiM Mini AirPlay2 Wireless Audio Streamer, Multiroom Stereo, Preamplifier, Works with Alexa and Siri Voice Assistants, Stream Hi-Res Audio from Spotify, Amazon Music and More : Electronics
Amazon Echo Multi-Room Music with Alexa: How to set up - Gearbrain
Amazon.com: Audio Pro Addon C5A Smart Speaker | Alexa Built-in, Smart Home Speaker | Multiroom, High Fidelity, Compact, Wireless Bluetooth Speaker | Also Good for Outdoor, Home, Camping, Travel, Beach | White : Electronics
Setting Up Lovelace Accessible Alexa Multi Room Audio - Share your Projects! - Home Assistant Community