At work, I use a big Acer monitor connected to my Macbook Air via an HDMI dongle from Moshi and an HDMI cable. For quite some time, I was content with having the sound come out of the Macbook Air, which I have set up just to the left of the big monitor as a second screen.
But the other day, since I have the huge TV in my office, the rest of the staff came in to preview a promotional video we’d done for our agency. The tinny sound of my Macbook Air speakers wasn’t enough. I wanted to hear it out of the TV.
This is what I did.
In the upper right hand corner of the Mac screen, there’s the sound icon. Click it normally and you can increase or decrease the volume. But, if you Option-click it, you’ll get all the different output options your Mac has to send audio through.