Well guys, this past weekend Sun. 4/22/2018, I was able to check the TV in my parents' den to see if it could pick up Peachtree TV's audio, and it picked up the audio without any problems. I just checked my dad's TV in his bedroom an hour ago. There's no audio problems there where Peachtree TV is concerned. I went back to my TV in my bedroom, accessed the Xfinity audio setup, and I noticed the "Default Audio Track" was set to Espanol. I set it to English and I was able to hear the audio on Peachtree TV for all programming & all ads again. Apparently, when my dad installed the Xfinity box on my TV, he forgot to change the "Default Audio Track". Most likely, I don't think he knew that the "Default Audio Track" needed to be changed. He must have thought it was already set for English. I apologize for wasting anyone's time in this thread. Just remember, everyone, when installing a cable company's set-top box on your TV, PLEASE make sure the "Default Audio Track" (if your box has one) is set to English. Anyway, that is all.