To access this dialog box: Open a Captivate movie. From the Audio menu, select Edit Audio. Click Insert Silence.
Use this dialog box to add a period of silence to a specific point in the audio file. The silent period is measured in seconds.
Insert: Use the up and down arrows to select the amount of silence, in seconds, to add.
Seconds at: Use the drop-arrow to select the location where the silence should be added. You can add silence to the beginning of the audio file, the end of the audio file, or to a specific point within the audio file.