FlowPlayer can use authentication codes to protect against inline linking of video and image files. Inline linking is also known as hotlinking or direct linking. To implement this in your site you need to use a server side script/app that generates these authentication codes and stores them into a file called flowplayer_auth.txt. The player reads the contents of this file just before a protected clip is loaded and concatenates the contents to clip's file name.

http://ffaat.pointclark.net/blog/archiv ... ching.html

Admin switch to flowplayer on next release?