Safari now has a built in feature that can prevent audio from automatically playing when visiting websites. This feature has the ability to block audio from the Shadow Health simulations. To ensure that audio is played, open the Safari menu and click Preferences.
On the Preferences window, click on Websites, then Auto-Play. You should see app.shadowhealth.com listed in the right hand area.
Change this setting to Allow All Auto-Play.
If the assignment is still loaded, please refresh the page and you should now hear audio.
If you are still having trouble hearing audio in your assignment, please contact support.