Audio on Five Tab Template

I have used the template for the five tabs - when the user first comes to this screen, I have an audio introduction. When the user selects one of the five tabs, it jumps to another slide.  I have a "return" button on that slide to return the user to the five tabs screen to select another tab.  Every time the user routes back, the audio that was used as the introduction plays over.  Any way to "silence" the audio after the first time?

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