Menu sound after a little while

No, you misunderstood me. I meant, when the browser page is in the background, and im not currently navigating the site, the browser will make those sounds on its own, after like 30 mins /1 hour the page has been loaded.
As for the normal behaviour, personally, i dont find it annoying, except when i have my headset with loud music. Maybe you could do an option to turn it off in the profile page.