To change the playback range to the duration of the current sound file
 -click
            the Time Slider.
-click
            the Time Slider.
            
         To set the audio playback speed
Sound will play back as long as the speed setting is not set to Play every frame.
To disable sound during playback
 -click
            the Time Slider to access the Time Slider Key Edit menu and
            select Sound > Off.
-click
            the Time Slider to access the Time Slider Key Edit menu and
            select Sound > Off. 
         To access the sound options for audio nodes
 -click
            the Time Slider to access the Time Slider Key Edit menu, and
            select Sound > filename >
-click
            the Time Slider to access the Time Slider Key Edit menu, and
            select Sound > filename >  .
.