QuickTime 7 Player features a new window called A/V Controls that allows you to control aspects of the audio and video being played�from the Window menu, choose Show A/V Controls. With these controls, you can easily adjust the sound balance and volume, and make changes to the bass and treble response. A handy slider lets you set playback speed from 1/2x to 3x the normal speed. And by using the new Jog Shuttle, you can adjust the speed at which you search through individual movie frames.