Need help with pause/play sound and mc

I’m realtively new at this. I have a timeline of 30 frames, each it’s own mc (page01_mc, etc.). In each mc I show a picture or two and hear narration.
I have a first, prev and next nav on the main timeline. I need to add a play/pause btn that will pause both pictures and sound. I assume I do that in each mc, but do not know where to find the code. Here is what is in each mc now:
var mySound:Sound = new Sound();
mySound.load(new URLRequest(“english/Intro01.mp3”));
mySound.play();

a sample file can be downloaded from here

[COLOR=#0000ff]https://www.yousendit.com/download/RlRvdFdjTkxEbUpjR0E9PQ[/COLOR]