Hi,
I've been looking for an OS9 install disk too, except that I need a very specific one: for the 2003 MDD G4 (single 1.25GHz G4). That's the last Mac that can run Classic natively.
I've not yet found a system which will allow installation on that machine. It always says needs a newer version or whatever. This was a special machine released late for those that needed native Classic, I understand.
A copy of the System Folder from my older Yikes G4 starts up, but I have never managed to get sound working in native Mac OS 9 on the 2003 MDD. (Sound does work fine in Mac OS X and in Classic applications within Mac OS X). No sound output hardware is available in the sound control panel. That's a shame because I would like to use this to play a few old games every now and then (they run crap under Classic mode in Mac OS X).
Any ideas? Maybe a Sound Manager INIT or something for that specific model...
Good luck with your search OldTimey.
Cheers,
A.