Problem with Swf while loading for first time

Hi all,
I am new to as3 and i have stuck with a problem since last two days i tried to overcome it in many ways bt was of no use the problem is.
AS3,
I am loading an external swf animation and playing an audio which should be synchronized with the loaded swf i have used the loader class for loading swf and sound channel to load sound, when the audio gets fully loaded only we are calling function to load swf, at that time audio remains stopped when the swf too gets fully loaded, we are adding swf int stage and playing the audio. In local system it works fine but when we upload it its not synchronizingly properly for the first time
The issue what i see is that swf (only one is there) gets loaded frome inbetween ie the first ceration animations are missing. and audio is playing from the begining why is it so…

pls pls help me