How to Stop External audio swf

Hi all,

I am in a very pathetic situation, from last 3 days i have been in this problem and i am running out time to reach deadline so kindly please help me

I have two swf loaded into an engine one is an animation swf and the other an audio swf, i am able to stop the animation swf with reference but with audio it fails. I am not able to stop the audio( which is an another swf loaded to the engine with help of loader class) so please help me out to stop the audio and most above im using AS3

Thanks in advanceā€¦