Audio does not work on new version of Outlook. I have checked the settings and the box is checked to receive a sound when a new message arrives or a meeting is coming up. So that is not the problem.
Ben Hopper commented
Notification audio quits on ubuntu/chrome browsers. I tested to make sure it was problem with outlook, so I ran pandora music, pandora had worked so it's outlook
Aaron Boyles commented
I am no longer getting sound notification when new message come in.