Mistake on site, 802.11g question
There's one error I've found in the otherwise very helpful website mentioned above - they state you need OS X 10.3, while apple's website says at least 10.2.7. Also, the site says that you need an airport or airport extreme card, but I'd imagine it'd work with 3rd party 802.11g solutions, as Airport Extreme isn't available for my Pismo, and 3rd party 802.11g solutions work on a PC with AirTunes. (Correct me if I'm wrong.)
I bet streaming with iTunes to AP Express really eats up the processor time. Ripping mp3's is processor-intensive, and streaming requires decoding from mp3's and then re-encoding to Apple Lossless.
--D