Generates a MP3 button on YouTube.com. Convert YouTube to mp3 and download the file to your device. Updated for Youtube November 2022.
Updated the original userscript (https://greasyfork.org/scripts/396897-youtube-mp3-320-kbps/) to work with the latest update (Nov 2022) to YouTube, and use a site that actually supports 320 kbps downloads. Figured I'd post since it could be useful to others.
