FLV downloaded form server won't play

Hi,

I'm sure I'm missing something simple.  I'm developing an application that will need to have content periodically updated.  I wrote some code to download a FLV from the web  as a test. But when I try to play it by giving it a source path that equals the native path of the FLV that was downloaded, nothig happens.  I noticed that if I manually copied the downloaded file, pasted it to a new location and tried to play it, it worked fine. Also if I copy and paste the file using code, I can play it. Here's the code.

var urlString:String = "http://www.website/test.flv";

var urlReq:URLRequest = new URLRequest(urlString);

var urlStream:URLStream = new URLStream();

var fileData:ByteArray = new ByteArray();

urlStream.addEventListener(Event.COMPLETE, loaded);

urlStream.load(urlReq);

function loaded(event:Event):void{ 

    urlStream.readBytes(fileData, 0, urlStream.bytesAvailable);

    writeAirFile();

}

var mediaPath:String;

function writeAirFile():void{

          var file:File = File.applicationStorageDirectory.resolvePath("test.flv"); // It will work

          var fileStream:FileStream = new FileStream();

          fileStream.open(file, FileMode.WRITE);

          fileStream.writeBytes(fileData, 0, fileData.length);

          fileStream.close();

          trace("The file is written.");

          mediaPath = file.nativePath;

          copyFlv()

}

function copyFlv(): void {

          var sourceFile:File = File.applicationStorageDirectory.resolvePath("test.flv");

          var destination:File = File.applicationDirectory.resolvePath("media/test.flv");

          var destinationStr:String = destination.nativePath;

          destination = new File(destinationStr);

          sourceFile.addEventListener(Event.COMPLETE, fileCopyCompleteHandler);

          sourceFile.addEventListener(IOErrorEvent.IO_ERROR, fileMoveIOErrorEventHandler);

          sourceFile.copyToAsync(destination, true);

}

function fileCopyCompleteHandler(event:Event):void {

          trace(event.target); // [object File]

          var flv:FLVPlayback = new FLVPlayback;

          addChild(flv)

          flv.source = "media/test.flv";

          trace("source = " + flv.source);

}

Any help would be appreciated.

Best,

C.S.