Does Apple airport express work well?

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.

Man, with all these wireless ooglemeiers spewing EMFs all over the place, you guys are liable to grow a third eye. Maybe that's how that kid in China got those 16 extra fingers and toes.

I have no issues with mine cutting out, quality of the digital out is excellent. Analog out is fine for non critical listening

Sounds like I will try one. I am not a computer tech kind of guy so all I need a wireless card in my PC and the AE?
I am going to run it to a DAC that I am already using the toslink input on. Would I be better off using the usb to the DAC or use something to convert the optical output to coaxial for input to the DAC?