AS3_video_playlist_flvplayer, unload flv

I have been playing around with some script in AS3 and cant seem to get the FLV to unload when the video gets to the end in my player using netStream.
Or get the Play button disabled when the video ends. Can anyone help.
My problem edits are in red the rest of the code is OK

var nc:NetConnection = new NetConnection();

nc.connect(null);

// Assign Var for the NetStream Object using NetConnection (we use ns here)

var ns:NetStream = new NetStream(nc);

// Set the number for buffer time in seconds

const buffer_time:Number = 5;

// Set client for Meta Data Function

ns.client = this;

// Add the buffer time to the video object

ns.bufferTime = buffer_time;

// Boolean value for button functions, to switch in the conditionals

var isPlaying:Boolean;

// Assign NetStream to make player start automatically using video 1

var videoNumber:Number = 1;

/*

[COLOR=“Red”]playPauseBtn.addEventListener(MouseEvent.CLICK, disablePlayPauseBtn);

function disablePlayPauseBtn(event:MouseEvent):void {

if (isPlaying = false); {

playPauseBtn.enabled=false;

}

}

playPauseBtn.addEventListener(MouseEvent.CLICK, ablePlayPauseBtn);

function ablePlayPauseBtn(event:MouseEvent):void {

if (isPlaying = true); {

playPauseBtn.enabled = true;

}

}
[/COLOR]
*/

// Set our flashing pauseClip to visibilty of false because the video is now playing

pauseClip.visible = false;

// Assign the variable name for the video object

var vid:Video = new Video();

// Set first video into the frame now so it is not empty at start up, and display title 1

vid.attachNetStream(ns);

// create movieclip for video to play in

var vid_frame:MovieClip = new MovieClip;

// Add the video instance to the video frame movieclip we just created through code

vid_frame.addChild(vid);

// Set the dimensions to match your videos, you may have to adjust layout and stage size

// if you make your videos a different size than mine

vid_frame.width = 525;

vid_frame.height = 385;

// I offset video frame position for my layout

//vid_frame.x = 1;

// Put the video on stage now using “addChildAt 2” to place it on the bottom layer

addChildAt(vid_frame, 2);

// Set the titles of your video files here

var title0:String = “”;

var title1:String = “art director”;

var title2:String = “front desk”;

var title3:String = “designers”;

var title4:String = “owner”;

var title5:String = “owner’s kid”;

// Add first title to the text field because the first video is playing

title_txt.text = title0;

// Add Error listener and listener for our play button

ns.addEventListener(AsyncErrorEvent.ASYNC_ERROR, asyncErrorHandler);

playPauseBtn.addEventListener(MouseEvent.CLICK, playPause);

// Add event listener so we can click our big pause clip center screen to resume play if paused

pauseClip.addEventListener(MouseEvent.CLICK, pauseClipclick);

// Error Function

function asyncErrorHandler(event:AsyncErrorEvent):void{

// Do whatever you want if an error arises, I don’t do anything, I get no errors

}

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

// PlayPause function for toggling the Play-Pause button /////////////////////////////////////////////

function playPause(event:MouseEvent):void {

if (isPlaying == true) {

ns.pause();

pauseClip.visible = true;

isPlaying = false;

playPauseBtn.gotoAndStop(2);

} else {

ns.resume();

pauseClip.visible = false;

isPlaying = true;

playPauseBtn.gotoAndStop(1);

}

}

////////////////////////////////////////////////////////////////////////////////////

// And now we code the function that handles what happens when they resume after clicking pauseClip

function pauseClipclick(event:MouseEvent):void {

ns.resume();

pauseClip.visible = false;

isPlaying = true;

playPauseBtn.gotoAndStop(1);

}

////////////////////////////////////////////////////////////////////////////////////

// Play Function for all thumbnails in your playlist

function playVideo():void {

ns.pause();

ns.seek(0);

ns.play(VideoFolder + “/video” + videoNumber +".flv");

vid.attachNetStream(ns);

vid_frame.addChild(vid);

pauseClip.visible = false;

playPauseBtn.gotoAndStop(1);

isPlaying = true;

// If and else statements to place the correct title in the dynamic text field

if (videoNumber == 1) { title_txt.text = title1;

} else if (videoNumber == 2) { title_txt.text = title2;

} else if (videoNumber == 3) { title_txt.text = title3;

} else if (videoNumber == 4) { title_txt.text = title4;

} else if (videoNumber == 5) { title_txt.text = title5;

}

}

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

// Now we code out each thumbnail button function, what each does when clicked

function thumb1click(event:MouseEvent):void {

videoNumber = 1;

playVideo(); // run the playVideo function with a videoNumber var of 1

}

function thumb2click(event:MouseEvent):void {

videoNumber = 2;

playVideo(); // run the playVideo function with a videoNumber var of 2

}

function thumb3click(event:MouseEvent):void {

videoNumber = 3;

playVideo(); // run the playVideo function with a videoNumber var of 3

}

function thumb4click(event:MouseEvent):void {

videoNumber = 4;

playVideo(); // run the playVideo function with a videoNumber var of 4

}

function thumb5click(event:MouseEvent):void {

videoNumber = 5;

playVideo(); // run the playVideo function with a videoNumber var of 5

}

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

// META DATA CODE and displaying Duration Time of Current playing video

// Set the Meta Object

var meta = new Object;

// Here in this function we can access important meta data we need and more

function onMetaData(infoObject:Object):void {

var key:String;

for (key in infoObject) { // for loop trace test… not needed for script to operate

// trace(key + ": " + infoObject[key]); // trace by pressing Ctrl+Enter to see cool data about file you can access

} // end test trace… not needed for script to operate

meta = infoObject;

var durationSecs:Number = Math.floor(meta.duration);

var durationMins:Number = Math.floor(durationSecs / 60);

durationMins %= 60;

durationSecs %= 60;

var durSecsDisplay:String = “”;

var durMinsDisplay:String = “”;

if (durationMins < 10){

durMinsDisplay = “0” + durationMins;

} else {

durMinsDisplay = “” + durationMins;

}

if (durationSecs < 10){

durSecsDisplay = “0” + durationSecs;

} else {

durSecsDisplay = “” + durationSecs;

}

// Display the full duration time

duration_txt.text = durMinsDisplay + “:” + durSecsDisplay;

}

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

// Timer and NetStream Time display(currently playing video time progress text and bar)

var t:Timer = new Timer(1000);

t.addEventListener(TimerEvent.TIMER, onTick);

t.start();

function onTick(event:TimerEvent):void {

var nsSecs:Number = Math.floor(ns.time);

var nsMins:Number = Math.floor(nsSecs / 60);

nsMins %= 60;

nsSecs %= 60;

var nsSecsDisplay:String = “”;

var nsMinsDisplay:String = “”;

if (nsMins < 10){

nsMinsDisplay = “0” + nsMins;

} else {

nsMinsDisplay = “” + nsMins;

}

if (nsSecs < 10){

nsSecsDisplay = “0” + nsSecs;

} else {

nsSecsDisplay = “” + nsSecs;

}

// Display the play time rolling along

time_txt.text = nsMinsDisplay + “:” + nsSecsDisplay;

// Set the bright blue video position bar in the scrubber to follow video play

videoScrubber.positionBar.width = ns.time / meta.duration * 300;

// Set the video scrubber position to follow the playhead as it rolls along

videoScrubber.follower.x = videoScrubber.positionBar.width;

// Adjust the width of the dark blue “loaded progress” percent bar in the volume slider movieclip

var loadedPercent:uint = 100 * (ns.bytesLoaded / ns.bytesTotal);

videoScrubber.loadedProgressBar.width = loadedPercent * 3;

// This if statement tells the player to AutoPlay the next video for repeated looped play

if (nsSecs == Math.floor(meta.duration)) {

[COLOR=“Red”]ns.close(); //stops and unloads the video

vid.clear(); //clears the video image
ns.seek(0);
pauseClip.visible = false;[/COLOR]