Great UI in Chrome here… I had about a dozen tabs open, and some audio was playing. It was an auto-play ad, so I didn’t initiate it and I didn’t know where it was coming from. I happened to look up in the tab bar and spotted a little speaker icon in one of the tabs (see the middle tab in the photo). I clicked it. Sure enough, that’s where the sound was coming from. When the video ended, the little speaker icon went away. Great little touch that answers a common question… “Where’s that sound coming from?”