Sound clips on MouseOVER state buttons

I have imported a few sound clips to my library. On the OVER state of my buttons properties I choose SOUND, then select the sound from the menu. I have done this for each individual button (4 total).

The issue is that the sound clip plays but the sounds are “running” into each other. What are the steps to make the OVER state sound clips play once and then stop before the next sound plays?

Thanks!

Daniel