Add a "mute tab" option in the tab context menu. Add a sound icon to tabs of pages that are making sound.
I'd like to get rid of the statusbar but retain the functionality. Holding a key, probably ctrl or alt, while you hover over a link should force the URL into a toolitp. When the URL is too long the ellipsis should be in the middle so you can still see the "www.whatever.com" and the file extension. Don't get rid of the statusbar, I just don't want to need it.