Problem With Flv

So i have this problem...


I have an swf file for example apollonia.swf..
Inside it loads the skin ClearOverPlaySeekMute.swf...

whitch load 3 flv files
videos/Aplolonia Al.flv
videos/Aplolonia Gr.flv
videos/Aplolonia En.flv

So i run apollonia.swf file and all run smoothly..
I publish fla project and i run it in IE all run smoothly..

I run it in mozilla and the flv files with the skin doesnt load...

this is the index
[root]
Apollonia.html
Apollonia.swf
ClearOverPlaySeekMute.swf

[root/videos]
videos/Aplolonia Al.flv
videos/Aplolonia Gr.flv
videos/Aplolonia En.flv

But if its loads in IE i thinks theres isnt a problem with the structure..

this is the code which handle the video page

Code:
on (reveal) {

// Transition behavior
if (!eventObj.target._isSlide || (eventObj.target._isSlide && eventObj.target.currentSlide)) {
mx.transitions.TransitionManager.start (eventObj.target,
{type:mx.transitions.Fade,
direction:0, duration:1, easing:mx.transitions.easing.None.easeNone,
param1:empty, param2:empty});

eventObj.target.__transitionManager._triggerEvent = eventObj.type;
}
// End Transition behavior

}
is there a problem with this code?

Why this happens ? the skin and the externals flv' s loads perfectly in IE but not in firefox...