Hello Darci!
I am happy to help! I understand that audio cuts out on multiple slides in a variety of projects when they're hosted on a server. What type of server are you using? Have you tried hosting content in another web environment?
Amazon S3 offers free hosting with generous usage limits. If you go over your limit, you'll be charged a small fee. See this video tutorial by Tom Kuhlmann to learn more about Amazon S3.
Also, Google Cloud also has a free hosting service. You'll be charged a small fee if you go over the free limit. See this video tutorial by Tom Kuhlmann to learn more about Google Cloud.
I'd recommend testing your course in another web environment to determine if it's the file or the hosting environment.