Sound on embedded video - PowerPoint slides shared screen

I have a panelist scheduled for a webinar next week. She reviewed her slides with me today. She has short embedded video on two PowerPoint slides. During our practice session, I could not hear the sound as she played the video. I am the host and she is a panelist. Is there a setting I need to change on my account or in that specific meeting that allows sound from videos embedded in shared PowerPoint slides to be heard by me and all participants?