Storyline Audio Problem

Hello everyone,
I've finally identified the problem, and it was totally improbable!
In fact, it was coming from my Jabra headset... I realized this while creating a tutorial on the use of a computer tool. As we've had the same equipment in the company since November, we've all had to deal with the same problem... we just had to know.
Anyway, I wanted to thank you for your responsiveness and help. I'm sorry to have wasted your time on this matter...
I wish you all a happy holiday season :)