Apple includes decent instructions with the AirPort Express, but using the AirPort Express to set up a new WiFi network boils down to the following steps.
- Close iTunes, then plug the AirPort Express into a wall outlet near your stereo. Connect it to your stereo. The method you use depends on whether you have a digital or analog input on your stereo.
- Run the AirPort Express Assistant from the setup disc.
- Choose the option for Set Up A New AirPort Express.
- Choose Create A New Wireless Network on the first screen.
- Select the new AirPort Express (most likely the only name on the list) and click Next.
- Name your new network and your AirPort Express and click Next.
- Choose your security settings. You'll need them to connect other computers to the network. Try 128-bit WEP for maximum compatibility or WPA if you're extremely worried about people getting onto your network. Click Next.
- On the Network Setup page, choose whichever setting applies to you. If you're not trying to use the AirPort Express to provide Internet access for your network, choose the last option (I Don't Want To Connect). Click Next.
- Create and verify the base station password for your AirPort Express, which you'll need if you want to change its settings. Click Next twice.
- If you're still not connected to the AirPort Express, connect to it using Windows networking (double-click the networking icon in the task bar).
- Start iTunes; at the lower right, you'll see a new drop-down menu; open it, and select your AirPort Express. Now you can hear iTunes coming out of your stereo wirelessly.
