I'm pleased to say that I've integrated all the mac source into VMMaker. Fairly soon I'll issue the change sets which btw preserve the existing historically incorrect/mangled/muddled plugin names (sorry Tim) and post where the tar bar is for the tree. I realize of course the next big thing is to use CVS or something to update the tree, but I'll leave that for another day.
Via VM maker you can now build (via codewarrior) a macintosh 68k VM macintosh PowerPC VM macintosh Carbon VM macintosh PowerPC Browser plugin macintosh PowerPC Carbon Browser plugin A Fat VM...
Optionally you can build an Open Transport version for 68K if you get the correct files.
I've also integrated in the Mpeg3Plugin FFIPlugin testOSAPlugin (applescript)
as external plugins for PowerPC. In the past some of these have lurked as optional features if you could find an old plugin and/or figure out how to build your own.