ActionScript 3.0 :: MPEG-4 Videos Will Not Download

I have made my first website and everything plays fine on my computer but now I have uploaded it to Network solutions FTP site my videos won't play.

This is my script.
videoplayer.visible=false;
showReel_btn.addEventListener(MouseEvent.CLICK, playShowReel);
flashScene_btn.addEventListener(MouseEvent.CLICK, playFlashScene);
afterEffects_btn.addEventListener(MouseEvent.CLICK , playAfterEffects);
textLogo_btn.addEventListener(MouseEvent.CLICK, playtextLogo);
[Code] .....