Works great! Try it out...

Please make hotkeys “Stop” and “Start with last value”.
It`s very important for this add-on.
Please, please, please ))

Browser slows down

Works but produces audio stutters even on manual reloads or page transitions while installed

Doesn't work.

Great plugin. If I could offer my feedback. If you added support for refreshing view-source pages, that would help for web dev.

From time to time it stops working because it losts refresh interval set for particular tabs.

worked great for me, thanks!

very good