Well you can add your sound play effect in a function, and call the function from the collision detection event to play the sound, but in the function it self add once every sec condition to like 1 sec, this means the sound can play only once every 1 sec.
Edit: If you want to play it twice, call the sound action twice, but you will have to add wait condition at least 0.1 seconds so they will not trigger at the same time ( if they do, you wont be able to tell the difference)