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                 For  fade-outs, the audio data will be truncated at the stop-
                 time and the volume will be ramped from full volume down to 0
                 starting at fade-out-length seconds before the stop-time.  If
                 fade-out-length is not specified, it  defaults  to  the  same
                 value  as  fade-in-length.   No  fade-out is performed if the
                 stop-time is not specified.