Does your AirTunes music stream get interrupted when you use AirPort Express and iTunes with Microsoft Windows-based computers? If so, a simple adjustment to the Wireless Network Connection Properties on your Windows computers could help out.
Windows scans for wireless networks every minute, sometimes causing a connection to drop, which you'd hear as skip in your music. Defining your wireless network preferences can help maintain the connection when a computer is doing another wireless activity, such as providing an AirTunes stream. Try this:
The updated list order should improve your connection, reducing AirTunes interruptions.