Stop FLV when enter a new frame

Does anybody know how you stop your FLV from playing/loading when you move to another frame within your SWF?

http://www.sessionrecordingstudio.com/raykay/site/site.html :Click on director then photographer after the .flv started, and you still here the .flv in the background.

the .fla: http://www.sessionrecordingstudio.com/Temp/site.fla