Curiosly, I just checked and I have: * media.autoplay.default = 5 * media.autoplay.enabled = false in my about:config but media.block-autoplay-until-in-foreg

Curiosly, I just checked and I have: * media.autoplay.default = 5 * media.autoplay.enabled = false in my about:config but media.block-autoplay-until-in-foreground was left at its default "true" value, so I changed that. I am going to post this and restart the browser to see if that did the trick. *Update*: No, it didn't. sigh I found this: https://support.mozilla.org/en-US/questions/1274056 https://support.mozilla.org/en-US/questions/1274056 > media.autoplay.allow-extension-background-pages false > media.autoplay.block-event.enabled true > media.autoplay.block-webaudio true > media.autoplay.default 5 > media.autoplay.enabled.user-gestures-needed false There is also this https://old.reddit.com/r/firefox/comments/h0rsd9/could_someone_please_explain_the_options_for/fuohfrs/ https://old.reddit.com/r/firefox/comments/h0rsd9/could_someo... > media.autoplay.blocking_policy = 2 seems to correspond to the media.autoplay.enabled.user-gestures-needed setting above. Will try those next. *Last Update*: I have set: media.autoplay.allow-extension-background-pages = false media.autoplay.block-event.enabled = true media.autoplay.block-webaudio = true media.autoplay.default = 5 media.autoplay.blocking_policy = 2 Thank you very much. and that finally seems to have restored the behavior I want.