ActionScript 3.0 :: Embedding The Video Dynamically?

On button clicks , I have used  movie clip with top registration as base container [ gpageContainer_mc]  and  i have added and deleted pages to it using similar code for all buttons .

These pages are also movie clips with top left registration[gpage4].

press_review ->  is the sub menu button
var gp1:gpage1=new gpage1;
menu_cont.media_menu.press_review.addEventListener(MouseEvent.CLICK,me diaclik3);function mediaclik3(event:MouseEvent ):void {    menu_cont.gpageContainer_mc.removeChildAt(1);    menu_cont.gpageContainer_mc.addChild(gp1);}
  
This works perfectly fine for all page navigations .But, the audio persists  when I navigate from a page which has video embedded in it .I am able to see the new page but still I hear the audio in the background .I have used file -> import video option to embed video on my page . I didnot add any action scripting for playing the video as these had come when I imported video file and choosing skin for it .