Chosen Solution
I was going to watch a YouTube video when I realized the audio wasn’t working. I went to adjust the volume and instead of showing how loud the volume is set to I get a circle with a line thru it instead under the volume icon. Both the speakers on the iMac and my headphones get the same icon and issue. What happened?
I have a Bluetooth speaker that I am using for audio on my iMac now. It’s substantial.