Actionscript 3 :: Stopping FLVPlaypack Component?

I have problem stopping FLVPlaypack component when I navigate from one frame to another frame that the play which has instance name (vi) still working in back ground.when the flash loaded I used vi.stop() to stop the play also I added same line to each function that would be called when a button clicked but when I click any button the sound still playing in the background and when I click on the button(b1) which navigate to frame 1 which has the player, the player would be stopped but the sound is still playing.I want is to stop the player when I navigate to another frame.here is my code:

stop();
vi.stop();
b1.addEventListener(MouseEvent.CLICK, bt1);
b2.addEventListener(MouseEvent.CLICK, bt2);[code]...