Extension for turning off video on youtube.

I mostly listen to songs a lot on youtube while working. The video playing in the background just heats up my laptop, eats up my battery and data / bandwidth. Youtube doesn't provide this functionality natively.

Disable video for youtube songs which saves battery life and bandwidth / data.

Avaliable on firefox - youtube-audio

I don't have a safari or chrome developer account. Anyone willing to help, please PM me. :)