How to remove childrens?! :-( the sounds still playing

hey,

i have a fla that contains:

3 buttons
3 mc’s that every one of them is a swf loader if they are clicked on.

every one of the loaded swf has sounds…

what i’m trying to do is:

  1. when i press the first button that loads the swf, and right after i press another button, the first swf keeps playing with it’s sounds…

how can i make it stop playing?or even disappear totally (and reappear if it’s button was clicked)?

here are all the files includes the FLA of the container!

http://www.fileflyer.com/view/4cvrTCY

i’ll be so so grateful 4 any help!

thank U all