Confirm all audio icons under all applications are not muted.Confirm the Device (leftmost item) has volume slider pulled all the way to the top.NOTE: You can resize the Volume Mixer by pulling the edge of the window so you can see ALL applications using audio on your computer.
There is a speaker icon next to the computer clock in lower right corner of screen on Windows computers.
I HEAR AUDIO ON YOUTUBE VIDEO BUT NOT IN MY PROGRAM! This can confirm whether this lack of audio is an issue with your computer or within the program. If there is very low or no audio coming through your program, please click on this link to open in a new window and click on any video on the main page to confirm you are able to hear audio.
If you still are not hearing audio in your program - please see troubleshooting steps below: Please click on the 'Reload Video' button located at the lower left corner of your program viewer, it looks like this:
