Problem in sound when loading new SWF

import com.greensock.*;
import com.greensock.events.LoaderEvent;
import com.greensock.loading.SWFLoader;


var intro:SWFLoader = new SWFLoader("main.swf", {container:this, x:0, y:0});
SoundMixer.stopAll(); 
intro.load();

I am a newbie in AS3. I have 2 swf files, intro.swf and main.swf. I had put this script in the last frame of the intro.swf, so that when the timeline reaches last frame, main.swf is loaded. The problem is that both the swf has different audios. When i put this script, main.swf is loading, but with intro’s audio replaying in it. I want to stop the intro’s audio while the main.swf is loading and plays its own audio. Any solution?