Rich and multimedia content is increasing rapidly on the Web. It is very attractive for sighted
people, but it brings severe problems to screen reader users. Once the audio starts playing,
it becomes hard for blind users to listen to the screen reader because there is physically only
one volume control that cannot control the separate audio streams. Though there are often
software-controlled buttons to control the audio, they are often controllable only with a
mouse and are not associated with alternative text. Because of the audio conflicts and …