Control Audio When Re-entering a Slide

Can someone walk me through the variable controls I could use to do the following?

I am on Scene 1 Slide 10 with a button that jumps me to Scene 2. When I complete the last slide in Scene 2, I jump back to Slide 10 in Scene 1. I want the audio to play when I first hit slide 10 but not to play again when I return from Scene 2.  I tried creating a variable and setting it to True when I click the button on slide 10 (which jumps me to Scene 2) and a trigger on the slide to stop media if variable=true but the media still played when I return from Scene 2.  I am sure I am missing something or misplacing the triggers.

Any guidance would be much appreciated.  Thanks!