10.10.5 update stole my computer sounds
I updated to 10.10.5 from the App Store a few days ago, but I've noticed that my computer makes no sounds when I put something in the Trash Can or empty it, or when I download anything — normally I get a *ding* to let me know it's done, but now I don't. I get sound through the speakers fine, and when I use my headphones as well, but otherwise, nada. Is this a problem other people are having as well, or am I the lone nut? Any and all help would be appreciated.
MacBook, OS X Yosemite (10.10.5)