[CM] reverb decay length option, and click question

[bil at ccrma.Stanford.EDU]

The only mention of :decay-time that I can find is
in clm.html -- that file describes the Common Lisp
version of clm, not the scheme version.  In the scheme
version, the decay time is up to the reverb, and is
sometimes passed via the :reverb-data parameter
to with-sound.   freeverb for example has a decay-time
parameter which can be passed from with-sound via
:reverb-data '(:decay-time 1.0).