How to Switch Your Chromebook to “Mono” (So You Can Wear One Earbud)

On the majority of devices, audio is separated between the two speakers—this is called “stereo.” If you’re hard of hearing in one ear, or listen in an environment not conducive to clogging both ears with sound, you can easily switch your Chromebook to “mono” mode so the same audio comes from both speakers.
by Cameron Summerson via How-To Geek