Tween or Motion path for blank keynote with animated stars?

Question

I create star particle effect from this tutorial: http://www.schoolofflash.com/2008/03/flash-cs3-particle-effect/ and got help from this discussion: http://forums.adobe.com/message/5518425 in order to get what I wanted. My code is:
var starsArray:Array = new Array();
var myTimer:Timer = new Timer(50);
myTimer.addEventListener(TimerEvent.TIMER, addStars);
myTimer.start();
addEventListener(Event.ENTER_FRAME, moveStars);
function addStars(e:TimerEvent):void
          var star:Stars = new Stars();
          star.x = stage.stageWidth / 2;
          star.y = stage.stageHeight / 2;
          star.alpha = Math.random() * .8 + .2;
          star.scaleX = star.scaleY = Math.random() * .8 + .2;
          star.xMovement = Math.random() * 10 - 5;
          star.yMovement = Math.random() * 10 - 5;
          starsArray.push(star);
          addChild(star);
          star.cacheAsBitmap = true;
function moveStars(e:Event):void
          for each (var star:MovieClip in starsArray)
                    star.x += star.xMovement;
                    star.y += star.yMovement;
                    star.alpha -= .01;
                    star.scaleX = star.scaleY -= .01;
                    if (star.scaleX <= 0)
                              kill(star);
function kill(star:MovieClip):void
          starsArray.splice(starsArray.indexOf(star), 1);
          removeChild(star);
However, I wanted to move the star particles around. The problem is that the star isn't on the screen, but is called in the actions in the blank keynote. I don't know what I should do next to get the result. I looked up online for tweens and motion paths but all i see is that they required the star to be right on the screen, I think? I also heard something about the compiled clip but I don't know how I should go about creating one and using it to move around the stars while it's animated with all the actionscript. All I wanted is for the star particles to float around the screen (on a path that I can draw out if possible).....

Answer 1

Each star is created in the addStars function. Its position is set in the first two lines:
     star.x = stage.stageWidth / 2;
     star.y = stage.stageHeight / 2;
So, to move each star to a new location when it appears on the stage, you'll need to change the x and y property values for each star. One simple way to do that is to use that same Math.random() function.
Try changing those first two line to:
          star.x = Math.random() * stage.stageWidth;
          star.y = Math.random() * stage.stageHeight;