Hey all!
I have fixed the multimedia key problem in 9.1 with older USB Macs, in my case, I have a iMac DV SE 400. Here was my problem, you may have experienced it too:
When I booted my iMac, it didn't recognize my Soundsticks/iSub or my Pro keyboard. It prompted me to "find the driver" (on Apples servers or the net), but failed.Note that the Soundsticks actually FUNCTIONED fine, but the Mac was confused about them. Same with the keyboard; it worked gret EXCEPT for the MULTIMEDIA KEYS.
Diagnosis:
The problem is that Apple 9.1 installer is not installing the following Extension: "USB Support".
Solution:
I used TomeViewer 13d3 to open the OS 9.1 installer tome, and compared it to my current 9.1 system contents; sure enough, the "USB Support" INIT wasn't being installed for some reason. I then used TomeViewer to extract the Extension and dropped it in my System Folder, rebooted, and Voila': I have TOTAL sound and eject functionality now! I have just noticed that certian key combos (Shift,Cntrl,Command,etc) combinded with the "multimedia keys" do some cool things, find out for yourself...
Try it! It works!
Dan