sounds can be set in the config file or on the fly with the Options menu.
This also adds a mechanism for specifying a terminology preference
for a boolean option in the options menu.
The choices are: Term_False, Term_Off, Term_Disabled
Term_False, the default, will use the terms "false" and "true" in the
Options menu.
Term_Off will use the terms "off" and "on" in the Options menu.
Term_Disabled will use the terms "disabled" and "enabled" in the Options
menu.
I didn't review any of the existing options to see if one of the new
alternative terms might be a better fit. They were all left at the default.
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