Ok I see some of your points, when it come to mac vs pc and everyone fighting over the 2..
All of are new tuts going back about a year and a half including the dog tut are in divx so it should play on your MAC.
As far as the old WMV file tuts we are working on redoing a lot of them in divx so both MAC and PC users can veiw all are files.
Kurt
I am enough of an artist to draw freely upon my imagination, knowledge is limited, imagination encircles the world. (Albert Einstein)
https://www.artstation.com/kurtb