The following product pages still claim their products don't work on Mac, though they've done so for quite some time now:
http://www.logos.com/product/5793/greek-pronunciation-addin-with-erasmian-and-modern-data-sets
http://www.logos.com/product/4207/greek-audio-new-testament
(From http://community.logos.com/forums/t/25786.aspx)
And, btw, a search for "Greek audio" brings up the Addin twice, for some reason.
I see you've done some work on these pages now. Not quite there yet, though:
I was checking up on this, and there are still issues:
The more you fix, the more I find... Pretty depressing, eh? [;)]