I just got a pair of cheap (<$20) logitech play link gadgets to make my audrey wireless. It's similar to the wifi bridges others have described here, but it's not wifi compliant, so it has a gadget at the audrey, and another that you plug into your network. The benefit of this is that it's not on the wifi radio band so won't interfere with your wifi stuff. The downside is that it's only 1.5Mb, but it seems plenty fast for the slow audrey anyway.
Once you get your audrey working on your wired lan, just unplug it from the net and plug in these gadgets and they just work, no configuration needed. Mine are fairly close together, about 20 feet with a floor in between, so I don't know what kind of range you can get.
I got mine at Frys.com http://shop1.outpost.com/product/5067725
I got into the audrey just recently and tried for days to make a CF image with no luck, so I'm stuck with an old image without even shell access, but I'm still having fun with it.