Yeah mountain Lion is 64 bit but will run Ableton and logic in either 32/64bit.
Logic you right click (ctrl Click) and show info… there is a button to switch between 32/64
Ableton 64 is a separate app.
Version 1.5 of ANA is very close… once we have it we are doing a huge synthesis course based around ANA from beginner to advanced.
plugin folder is all done for you on mac… installers will just put everything in the right place.
ANA update is free a upgrade… there will be a bunch of new presets included.