thank you for the good job.. i would love to have it work not just in different tabs, but in different windows as well.. not that i want, but i have to use sometimes brave browser just because there is an add on which provides that.. but thank you anyway.. :)

Thank you for this plugin.
I loved it if it could mute active tab if the main window is inactive.

I tried to install this but the install popup says it couldn't install because the file appears to be corrupt.

EDIT: Okay, I don't use those. I was trying to install this into Pale Moon v26.0.3 (latest). It doesn't have Firefox's sound mute in the tab buttons so I thought this would be a helpful replacement. Thanks anyways.