Pause Sound in External SWF

Hello-

I am hoping someone can possibly help me here! Kinda stuck on this issue…

I have created a Flash container that cycles through an array loading in several external swf files. What I need to be able to do, is to control the sound of the external swfs from the main container. I would like to be able to pause and play/resume the sound of the external swfs, but not quite sure how to accomplish this, as I am newly migrating to AS3. Some of the sound is embedded in the external files, while others load it in via AS.

I was able to successfully pause/resume the animation of the external files, but cannot get the sound to pause - it just continues playing while the animation is stopped.

How can I pause and resume the sound of my external swfs from my main container?

Any help is greatly appreciated!! Thanks much.