Spotify Connect: We explain the devices, multiroom and advanced features
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How to Set Up Multi-Room Music - YouTube
Ieast Olio Wireless Wifi 2 4g / 5g & Bluetooth 5.0 Audio Receiver Music Player Multi Room Push System Supports Airplay2, Dlna…… - Desktop Digital Music Player - AliExpress
Amazon.com: WiiM Pro AirPlay 2 Receiver, Chromecast Audio, WiFi Multiroom Streamer, Compatible with Alexa, Siri and Google Assistant, Stream Hi-Res Audio from Spotify, Amazon Music, Tidal and More : Electronics
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Amazon's Alexa app gets more Sonos-y with new multiroom audio controls - The Verge
Amazon: Multi-Room-Music für Amazon Echo jetzt auch für Spotify - Notebookcheck.com News
Amazon.com: Audio Pro Addon C5 Speaker | Compact High Fidelity WiFi Bluetooth Wireless Multiroom Speaker | AirPlay, Alexa, Spotify Connect (MK II - Black) : Electronics