Громкость звука 600% от LEFRIEND

This add-on was originally deleted because it contained malicious code. After it got taken down, someone remade it, and made it open-source. However, said version didn't really work with websites such as soundcloud due to server limitations.

This version fixes that issue, being able to boost any audio from any website!

Shoutout: https://addons.mozilla.org/en-US/firefox/addon/600-sound-volume-privacy/