I really like this extension, but I've been noticing that when, for example: I'm on YouTube and I play a video, the extension doesn't pause the music. It seems that in some YouTube videos the extension works, and in some others it doesn't

Very awesome, works out of the box, one things that annoys me a bit, is that the keyboard sound replays instead of continues whenever I type fast, it would be cool if there's an advanced mode where we can control each sound volume, because some GX mods have louder sounds than the other, regardless, great addon! definately replaced Opera GX ambient for me :)

can you convert gx themes to firefox css?

I really like the browser sounds but a lot of sounds can not be downloaded as they say "failed to encode" when I try to add them.