Amazon.com: ShineBear Airport Express A1392 MC414LL/A 802.11n 600 Mbps 1- Port 10/100 Wireless Wi-Fi Router AirPlay WiFi for Apple - (Cable Length: EU) : Electronics
Apple Airport Express USB Audio Output Mod | H i F i D U I N O
Apple AirPort Express Review | Trusted Reviews
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
iXBT Labs - Apple AirPort Express: USB print server, WLAN repeater and bridge