Perhaps we can use this thread to compile compatability notes for iTunes with older Macs...
PowerMac 8500 w/ Newer G3 300MHz OS 9.0.4 - installs, launches and runs (limited testing)
PowerBook 2400c w/ Vimage G3 320Mhz OS 9.0.4 - installs, crashes on launch (Type 3)
asxless in iLand