Copyright: Copyright 1998-2001 W3C (MIT, INRIA, Keio), All Rights Reserved.
Author: Geoff Freed, WGBH/NCAM
           Version: Mar. 13, 2001, v3
            Module: Content Control Module
           Feature: systemAudioDesc test attribute
         File Name: systemAudioDesc.smil
  Media Components: 2 JPG, 2 WAV
 Expected Behavior: show image;
                    play audio descriptions from a single source file containing
                      descriptions and appropriately timed intervals of silence.