Hi Orm, hi list,
no, I'm not using any Macs or Max anymore but the markov object got ported to powerpc by Richard Dudas in the late nineties. I can send you a copy. It shouldn't be a big deal to get it translated to Max OsX, but I don't have any machine at hand. Maybe you can ask someone to adopt it? I can send you the sources of the powerpc code.
I wasn't aware of a powerpc port of your object, but I can't boot into os9 anymore on my ibook and i don't have any c programmers at hand ... however, as you mentioned Richard Dudas, I re-tried using his mchain abstaction (from ircam ftp) yesterday. I didn't have much luck the first time, and as I looked inside the patch to find the error I didn't understand much; turns out it was my mistake, and I don't need to know whats going on inside ;)
So I got my markov chains running with Xmax now, anyway if someone is porting the markov object to max I'd still be pleased to know.
best, g.