Please HELP! Back Button that goes back to previous frame

See example help.fla

I have several buttons on different Scenes that links to the same movie (i’m sure There is another way) (I have about 70 FLV movies (progressive download)

created a scene called “movies”
on each frame (90 blank keyframes) with a stop action , FLV Move Progressive download, and a back Button on each frame

When the user clicks on a the “back button” I want the program to go back where the user just was, Not the Previous Frame with in the timeline or scene.

Please Respond in detail if you can