System Preferences, uncheck the Do Not Disturb boxes....
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Jan 29, 2016 3:12 PM in response to djtnyc
I tried a bunch of the suggestions but what worked (and I found odd) was that even though I had turned off "do not disturb" in system preferences> notifications> do not disturb, when I went to the actual notification center in the upper right corner of my screen, "do not disturb" was still active. I turned it off there, and now I have sounds again. If you don't see it right away, scroll upwards because it sometimes hides above what you see, not sure why they make it do that. I find it odd that turning it off in one place doesn't affect the other. Here's a screenshot of where to look....