Force YouTube Audio to Play on Both Speakers [JavaScript]

Convert-YouTube-Audio-to-Mono.js

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# Description
	- Some videos on YouTube have a problem where the sound only comes out of the left or right channel
	- This happens when the person who edits the video forgets to convert any mono audio signals to stereo before rendering
	- Run this JavaScript snippet in your web browser to make YouTube play stereo audio as mono (same audio signal on all channels)

# How To Use
	- Method 1 (best): Copy/paste into "Custom script" box in "Enhancer for YouTube™ (download & instructions: bit.ly/3GmQgZC)
	- Method 2: Install as a UserScript using Tampermonkey, Greasemonkey, etc. (download & instructions: bit.ly/3K6B991)
	- Method 3: Copy/paste into browser console (in Dev Tools) & hit Enter

# Credit: Mike Dombrowski (https://mikedombrowski.com/2019/03/fix-youtube-mono-one-ear-audio/)

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(function(){
	var context = new AudioContext()
	var videos = document.getElementsByTagName("video")
	var audioElement = context.createMediaElementSource(videos[0])
	context.destination.channelCount = 1
	audioElement.connect(context.destination)
})()