"Go to Insert Zoom Region. You can size the zoom area as you do with a hotspot, and you can have as many on a slide as you need. "
"I've been using the Blue Snowball iCE USB Cardioid Condenser mic with a pop filter for years ($55 on Amazon). The sound is very clear."
Barbara Wiedl replied to the discussion Audio from a video on a slide plays randomly on other slides
"Thank you for the fix! I've been struggling with this exact problem for a couple of days."