I really like to use Sidewise. What I am missing, is some kind of indication which ones of the many, many tabs opened, is now playing some sound, eg. music, video or advertising.
I used to have more than 20 Tabs opened, and its really annoying to start chrome the other day, and every single youtube tab begins playing.
The Extension "Stop Autoplay in Background Tabs for Youtube" does not work properly, maybe you can add this to Sidewise too.
Best regards, burninghey
Customer support service by UserEcho