Toggling Audio On/Off easily?

Howdy ho, Lectora users! I'm a new user (just took the classes a couple of weeks ago), and I'm trying to see if there's an easy way to toggle audio on and off for an entire course? IE, I have three images at the top of each screen (aka, at the title level) that each have an action assigned to it...one to stop the audio on the page, one to start it, and one to show the closed captioning window. I would LIKE to add a fourth "action" that allows me to toggle the audio on or off for the whole course. IE, the action would be "Turn off audio for all pages" if the audio is on, or "turn audio back on for all pages" if the audio is already off.Does this make sense? Any thoughts on how I would code this? I'm just stumped. Thanks in advance for the help!Steph from Michigan

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