You can use the Attribute
               Editor for a selected audio node in order to adjust how
            an audio clip plays in the Camera Sequencer.
            You can edit when the audio starts and stops playing in the sequence,
            change which part of the audio source is used, or add extra frames
            with no sound at the beginning of the clip.
         
         To adjust the audio clip start and end
            time for a sequence
         
         If you have imported
            audio for an entire sequence, you can change when the audio clip
            plays using the Offset and End
               Frame attributes.
         
         
            - Select the audio clip you want to change.
            
 
            - In the Attribute Editor (on
               the audio node tab), set the sequence start frame you want in the Offset value,
               and set the sequence end frame you want in the End
                  Frame attribute.
            
 
         
         To adjust the audio start and end for
            a shot
         
         If you have imported
            audio for a specific shot, you can change when the audio clip plays
            using the Silence and Source
               End attributes.
         
         
            - Select the audio clip you want to change.
            
 
            - In the Attribute Editor,
               expand the Sequencer Attributes heading
               on the audio node tab.
            
 
            - To offset the audio from the start of
               the shot, enter the number of frames of silence you want to play
               first using the Silence attribute.
            
 
            - To stop the audio before the end of the
               shot, enter the frame where you want the audio to end in the Source
                  End attribute.
            
 
         
         To trim the start or end of the audio
            file
         
         To change which part
            of the audio clip plays during the associated shot or sequence,
            you can trim the audio. 
         
         
            - Select the audio clip you want to trim.
            
 
            - In the Attribute Editor (on
               the audio node tab), under the Sequencer Attributes heading,
               do one or both of the following:
               
                  - To change the frame (from the original
                     sound source file) where the audio starts to play, edit the Source
                        Start value. 
                  
 
                  - To change the frame (from the original
                     sound source file) where the audio stops playing, edit the Source
                        End value.
                  
 
               
             
         
         To add a period of silence to the beginning
            of an audio clip
         
         
            - In the Camera Sequencer,
               select the audio clip where you want to add silence.
            
 
            - In the Attribute Editor under
               the Sequencer Attributes heading,
               set the Silence attribute to the number
               of frames of silence you want to add.