FF 87.0 32b - works like described. Video is not downloaded at all. Nice addon. It would be good if addon could display snapshot screen likt it is before play is pressed instead of grey bar, but it is minor issue.

Невероятно! Спестява енергия, прави YouTube по приятно място и скоростта се увеличава драстично!

nice addon

absolutely usefull..thanks a lot

Perfect!

Simpe, Easy, Perfect

does not seem to support youtube livestreams.
https://github.com/animeshkundu/youtube-audio/issues/15

But sometimes video repeat and repeat(strange).

Would be better if you could enable it per tab

nice addon!

mom

Works well on regular music videos, but im mostly listening to live radio streams on YouTube, and this extension won't block the video stream from that.

Great Add-on Thankyou! Feature Request: make it so that you can enable it only for a given Firefox window