Fade in flvPlayback dosent work smooth

Question

i have a video in my swf wish i start playing when i click a button.
when i click the button the video fades in and starts playing..
but i cant get the video to fade in and start play smoothly..
anyone having an idea what to do to make the flvplayback fade in smooth?
or do i need to use the built in tween functions instead of tweenlite?
thanks in advance
code is below
import gs.TweenLite;
import gs.easing.*;
import fl.transitions.Tween;
import fl.transitions.easing.*;
var videoOn:Boolean = false;
video4_mc.addEventListener(MouseEvent.CLICK,toggleVideo);
function toggleVideo(e:MouseEvent)
    if(videoOn)
        TweenLite.to(flvPlayer, 2, {autoAlpha:0, ease:Expo.easeOut});
        TweenLite.to(part1pic_mc, 2, {autoAlpha:1, ease:Expo.easeOut});
        videoOn = false;
        video4_mc.gotoAndStop(1)
        flvPlayer.stop()
    else
        TweenLite.to(root.sc, 0.5, {volume:0});
        TweenLite.to(flvPlayer, 2, {autoAlpha:1, ease:Expo.easeOut});
        TweenLite.to(part1pic_mc, 2, {autoAlpha:0, ease:Expo.easeOut});
        video4_mc.gotoAndStop(2)
        flvPlayer.seek(0);
        flvPlayer.play();
        flvPlayer.source = "movies/movie.flv";
        videoOn = true;

Answer 1

i solved the problem
just removed the flvPlayer.source... code from the button function
and put it outside
thanks for taking time