Stopping embedded sound with SoundChannel?

I’m trying to figure out how to stop an embedded (event) sound without using the method SoundMixer.stopAll()

In the embedded sound I’ve set the Class to “HornSound”.
Here’s the code so far:

car_mc.addEventListener(MouseEvent.MOUSE_DOWN, carClick);
var horn:HornSound = new HornSound();

function carClick(event:MouseEvent):void {
var channel:SoundChannel = horn.play();
}

This works, but I want to add a line of code to stop the HornSound. You first stop the HornSound and then start the HornSound again, so I dousn’t play simultaneously. And this without using the method SoundMixer.stopAll() - otherwise my background music stops aswell.

Thanks in advance! Cheers, Wim