I'm was wondering which link you are using to your server? The url can not point to the prezi.exe file produced by Prezi!?? this does not work... I tried creating a new folder and pointing my link to the main.swf... I dion't know if this would play my prezi as it says that access to this folder is forbidden.
I know that the embed way works great, the problem is that we don't want the source code to be copied and shared or reused. Students pay for the content so it should be protected.
Any suggestions?