You can import an audio file to use with buttons, highlight boxes, click boxes, or text entry boxes. You can use the audio files that are available in the Gallery or record your own audio to associate with these objects. The Gallery folder is in C:\Program Files\Adobe\Adobe Captivate 6.0 (on Windows) and /Applications/Adobe Captivate 6.0/Gallery/ (on Mac OS).
You can also use the Library to add an audio file that already exists in the project.
The audio file plays when the object appears. You can also associate Audio with Success, Failure, or Hint captions.