I have one computer serve 3 rooms and it has plenty of room to spare to add more rooms and that way I only need to keep ONE master iTunes library with ALL my music, videos, and movies. I have two wireless networks in the house so if I ever did max out one wireless network, there's always a second one connected to my Gigabit router (right now I use it so my "N" devices don't slow down when connecting a B/G device like the iPod Touch or iPhone).
Yup. Agree. As this discussion progressed I learned that one can drive 5 video streams and 5 APE streams from one computer.
Now I am just hoping that we will see an update to ATV and Apple decides to work on REMOTE 2.0