Sound attached to any click of the mouse

Hi everybody,

I have a movie that already contains many buttons and movieclips behaving as buttons.

Now i would like to use a sound (click) from the library that would play when the user clicks any button or movieclip as well.

Do I have to go through all the instances, or there is a script to associate the sound to a “click” event?

If that is possible, would is work at all levels and loaded movies?

Thank you very much for your help.