This is a cool product, and I can understand the technique involved, but the latency of the response on the client is really unbearable to me.
I admire the programming, but I get MUCH better response running things like RDC for Windows XP, or Citrix Client for OS X on a far site DSL WAN connection my Mac than I get from netTunes on my private LAN at home.
Perhaps there is something that can be done to improve this.
I have an 8000 song iTunes collection with over 400 artists, and man does netTUNES choke when I try to scroll anything.
I was considering using this as a front end for a Mac based Jukebox, but I think I will probably look at the Slim Devices
http://www.slimdevices.com/ SLIMP3 product instead. They have an OS X Client that reads iTunes DB that runs their little box, and an IR remote as well. Pretty interesting!
Best wishes!
Happy New Year!