This thing won't even build anymore without several dozen minor fixes.
There must be thirty different places where the capitalization of "QuickTime/QuickTime.h" is wrong in this project. Sometimes it is written as "Quicktime/Quicktime.h", one time it was "Quicktime/quicktime.h", etc.
There's also one case of mis-capitalization of "IOKit/IOKitLib.h".
There are also two capitalization mistakes for "Cocoa/Cocoa.h".
Also, in MIMixerController.mm, MITimePaletteController.mm, and ZzVerbose.mm you need to add "#include <sys/time.h>" somewhere near the top because gettimeofday is no longer defined without it.
Also, MoreFilesX.c appears to redefine the function FSVolumeMount with an incompatible prototype. I had to #ifdef out the function in MoreFilesX.c and the matching prototype in MoreFilesX.h.
With those changes, it builds. I haven't tried it yet, but... wow, what a mess.