Pausing Audio When there's several multi state buttons with audio

Hi,

I have 3 multi state buttons on one slide.

And for each button - there is audio attached to the 4 custom states. 

When the learner is done with button one and goes to button two - they cycle through the states and hear that button's audio.

But what if they click back on the first button now...both audio clips will be playing at the same time.

I'd like to stop the audio from the current button if the student clicks another button.  I tried stopped triggered audio in my advanced action but that didn't work.

Any help would be much appreciated!

Thanks,

Denise