In theory the AirPort Express is great. Add it to your wireless network, and you can stream music from iTunes to your stereo. Wow, cool, right?

Well, here are some pitfalls we’ve run into:

If you have an active wireless connection and a wired connection to the same computer, and you try to stream music to the AirPort Express, the two different connections may interfer, resulting in dropped a link to the AirPort Express.

Solution: do not connect wirelessly to you network if you are also hardwired directly to the router.

If you use WPA wireless security, you may loose the link to your AirPort Express any time for no apparent reason. It appears that the AirPort Express is dropped from the WPA network whenever the key is renewed.

Solution: use (less secure) WEP security instead.