Tab groups have become one of Firefox’s most loved ways to stay organized — over 18 million people have used the feature since it launched earlier this year. Since then, we’ve been listening closely to feedback from the Mozilla Connect community to make this long-awaited feature even more helpful.
There is no setting for that and there are old open bugs about it. You can block “auto play” where the sound starts as soon as you open the page. But once there’s any user input, it’s no longer “auto” and the site can start playing sound. It can’t be blocked. Bah.
I set media.autoplay.blocking_policy=2 and media.autoplay.default=5. That seems to prevent anything from auto playing for me.
Hmm I will look into those settings. But I’d like to control it site by site rather than thru a global config.
My fix for those sites is to never visit them again. Horrible.
Ah I see. Haven’t encountered that anywhere, that sucks!