I just bought a download and i can not get it to work.... I can hear what he is saying but i cant see him the screen just goes green after the theory11 intro... HELP please.
Make sure that the file was downloaded correctly -- you may want to download the file again.
In addition, make sure that you have the latest version of Quicktime player -- http://www.apple.com/quicktime/download/ -- and play the file with that. That should fix your problem.