Flash Button Problem

Hello I’m New here and I figured some of you smart people out there may be able to help me.
Problem: I have A button which in the over state has a movie clip on it. I also put an action so that when you rollover the button it loads a certain frame to play a motion tween. The problem I’m having is that when you hold the mouse over the button it will play over and over again. I put a stop everywhere I can think of but i can’t get it to work.

So any suggestions would be greatly appreciated.