Problems with Sound objects

programming flash
1

Hi everybody,

I have a timeline that contains the declaration of two different Sound objects (that should affect the volume of the sound in two different movieclips) in two different frames of the main timeline.


var movieSound1:Sound=new Sound(image_mc);
movieSound1.setVolume(0);



var sound2:Sound=new Sound(movie_m3);
sound2.setVolume(700);

When I test the movie, I get this message in the Output panel: “SWF contains multiple copies of a sound item”

Could anyone please let me know what I am doing wrong?
Thanks a lot