Mute sounds in MovieClip

Hey, I have embedded flvs in the timeline of a few movieclips, I now need to be able to mute them so my ears wont be ruined by 5 clips playing simultaneously. I’ve tried with the SoundTransform, but somehow it seems like it’s working at random. How would I best do this?

Also the clips seem to be muted when they start but when they loop the sound goes on, any thoughts on why this occurs?

What im using now:


public function mute():void{
     this.video.soundTransform = new SoundTransform(0);
}
        
public function unmute():void{
     this.video.soundTransform = new SoundTransform(1);
}