pilotAnalysis2:
	Changed the way the sound-playing function is selected.

	I decided to make "soundsc" (basically wavplay with auto-scaling)
	the default audio-playing function, becaues it helps the user to
	hear quiet periods better.

	But the user can select one of the other two possible
	audio-playing funtions by using the optional 'wavplay' or 'audioplayer'
	input arguments.

Corresponding changes were made to SEQ_GUI.m and README.md.