Apple AirPort Express 5.1 - Manual (Page 17)

Chapter 2 Using AirPort Express 17
What It Looks Like
To join the wireless network, use the AirPort status menu in the menu bar on a
Macintosh. On a Windows computer, hold the pointer over the wireless connection
icon until you see your AirPort network name (SSID), and choose it from the list if there
are multiple networks available.
DSL or cable
modem
to Internet
Stereo receiver
Line Out port
AirPort Extreme
Base Station
to Ethernet port