If you're connecting to an audio machine—for example headphones or speakers—applying USB or HDMI, you could should established that device because the default audio unit. In case you’re employing an external keep track of that doesn’t have developed-in speakers, Be certain that the monitor isn’t already selected as your default https://davidhoffmeister.com/david-hoffmeister-the-message/metaphysics-of-a-course-in-miracles/