Video class and close()?

Hi there
I have implimented a video handler class to part of my project. What it is intended to do is remove the playing video using the netStream method and create a new instance with a new video file.
I can remove it using a standard removeChild function. However the pain occcurs when I can still hear the audio palying.

I guess my issue is that this is handled in a class and every time I create a new video it creates a new instance of the class.

My question is then how do I call netStram.close() from another class before creating a new video instance.

Here is the guts of my code if anyone could help.

**linked class for a gallery displayer
[AS]function on_Press(e:MouseEvent):void {

var my_thumb:Loader = Loader (e.target);
my_thumb.alpha = 1;
if(clicks > 0){
		removeChild( videoContainer )
}
videoContainer = new MovieClip  ;
addChild( videoContainer )

getVideo = new videoLoader("redbelt.flv");

videoContainer.addChild( getVideo );
videoContainer.x = Number(my_thumb.name)*100;
clicks ++;
}

[/AS]

**videoLoader Class
[AS] package com.myVideo{

import flash.display.Sprite;
import com.myVideo.simpleFlv;
public class videoLoader extends Sprite {
var v:simpleFlv = new simpleFlv();

public function videoLoader(callTarget:String) {

		v.playMyFlv(callTarget);
		
		addChild(v);

}
private function removeVideo():void{
v.playMyFlv.closeMyFlv();
trace(“remove”);
}

}

}[/AS]

**simpleFlv Class
[AS]package com.myVideo{
import flash.display.Sprite;
import flash.net.NetConnection;
import flash.net.NetStream;
import flash.media.Video;
import flash.text.TextFieldAutoSize;
import flash.text.TextField;
import flash.events.Event;
import flash.events.TimerEvent;
import flash.events.NetStatusEvent;
import flash.utils.Timer;

public class simpleFlv extends Sprite{
	public var _video:Video;
	public var _stream:NetStream;	
	public var _playbackTime:TextField;
	public var _duration:uint;
	public var _timer:Timer;
	
	public function simpleFlv(){
		_duration = 0;
		
		_playbackTime = new TextField();
		_playbackTime.autoSize = TextFieldAutoSize.LEFT;
		_playbackTime.y = 20;
		_playbackTime.x = 20;
		_playbackTime.text = "Buffering …";
		
		_timer = new Timer(1000);
		_timer.addEventListener(TimerEvent.TIMER, onTimer);
		_timer.start();
	}
	
	public function playMyFlv(flvUrl){
		_video = new Video();
		
		var connection:NetConnection = new NetConnection();
		connection.connect(null);
		
		_stream = new NetStream(connection);
		_stream.play(flvUrl);
		
		var Client:Object = new Object();
		Client.onMetaData = onMetaData;
		_stream.client = Client;
		_video.attachNetStream(_stream);
		
		_stream.addEventListener(NetStatusEvent.NET_STATUS, onNetStatus);
		
		addChild(_video);
		//addChild(_playbackTime);
	}
	
	public function closeMyFlv(){
		_stream.close();
	}
	
	private function onMetaData(data:Object){
		_duration = data.duration;
	}
	
	private function onNetStatus(e:NetStatusEvent){
		_video.width = _video.videoWidth;
		_video.height = _video.videoHeight;
	}
	
	private function onTimer(t:TimerEvent){
		if( _duration > 0 && _stream.time > 0 ){
			_playbackTime.text = Math.round(_stream.time) + " / " + Math.round(_duration);
		}
	}
}

}[/AS]