Does Apple airport express work well?

Mine works perfectly after a tweaked a few settings.

Is anyone using one with a Linksys router. I saw someones review that said you have to have an apple router.

Pal - According to Stereophile review it is not so great on analog outs and pretty good (low jitter) on optical one.

http://www.stereophile.com/digitalprocessors/505apple/

If you decide to use it with DAC be sure that your DAC won't cut off few seconds of next songs since AE cuts off clock between songs. When you install - be sure to select "join existing network" option instead of creating separate one. Ideal would be to use 802.11n (5GHz) but if you end up with standard 2.4GHz make sure to select best channel (far away from microwave oven frequency).

My experience is that the problem with the stream cutting out is because of interference from other devices, microwave ovens and cordless phones in my case. That's a problem that is easy to fix by choosing a different channel in the Airport Utility software that comes with the device.

With so many devices competing for wireless frequencies it's inevitable that there may sometimes be conflicts. Fortunately, the utility software makes it easy to switch to a clear channel.

The quality is excellent using the optical output to an external DAC.