Sometimes it's the little things: the audio out jack on the AirPort Express glows red when you start playing music and there are no speakers plugged in : r/apple
Apple Airport Express A1084 54 Mbps Wireless B/G Router-Audio with box & manual 718908686782 | eBay
Apple Introduces Redesigned AirPort Express - MacRumors
Apple AirPort Express A1264 Wireless 802.11n Wi-Fi MB321LL/A New Factory Sealed 8859092009 | eBay
Configure an AirPort Express as an Ethernet AirPlay Receiver - The Instructional
How to connect Apple's AirPort Express to any router to make an AirPlay 2 streaming target | AppleInsider
Category: Sonos Or Airport Express
AirPort Express A1264 - iFixit
Amazon.com: Belkin SoundForm Connect AirPlay 2 Adapter & Airplay 2 Receiver - Wireless Streaming for Apple Devices to Bluetooth Speakers - Optical & 3.5mm Speaker Inputs for iPhone 14, 13, MacBook Pro & More : Electronics
Apple AirPort Express Base Station 718908686782 | eBay
Apple's AirPort Express - What You Need To Know
AirPort Express will apparently gain AirPlay 2 speaker support