I haven't tried it yet, but I hear that you can look in the source for clonezone page, get the URL for the video and then tell Quicktime Player to open the URL. Then you can get it full screen.
Updated Instructions To View Full-screen on the Mac:
These instructions work well when using the Flip4Mac plugin to play the wmv files.
1.) Close Safari (or whatever browser you are using).
2.) Open System Preferences
3.) Select the Flip4Mac WMV icon
4.) On the browser tab check the "Launch QuickTime Player" box
5.) Open Browser, Login to CloneZone
6.) Select video (it will open in QuickTime Player)
7.) Select "Enter Full Screen" from the view menu
8.) Enjoy!
Bookmarks