when you pull up names or what is it file and want to select one it turns out you play two soundbites at one time..the soundbite under a name or what is it also plays...
yeah, the only way to prevent that is to click on the names tab and hold the mouse button, then just release it over a name, that way it wont play those underneath.
you can prevent this from happening by making the pop-up background a button - if it's just a rectangle or even a graphic you can click 'through' it - I had to learn this the hard way too
any time you make a pop-up just make the background of the pop-up a button and have your movie clips on top of it - then even if you miss when you mouse-release (so you have to press a button instead of release over it) it won't play any of the buttons underneath the pop-up background