Incorporated Steve's latest version of his audio library. This version

allows pitch and volume changes so we should be able tie this to the
throttle now.

Audio/CHANGES

@@ -9,6 +9,16 @@
 *                                              *
 \**********************************************/
 
+* 23rd Sept 1998 -- The Good News: Finally got around to
+                         getting the pitch envelope working. (Hooray) 
+                    The Bad News: This costs quite a bit in
+                         performance - and it was a MAJOR rewrite
+                         of significant parts of the internals,
+                         so we may need some bug fixes.
+
+* 7th  July 1998 -- Fixed some error checking in slSample.cxx and
+                    a missing declaration in sl.h
+
 * 6th  July 1998 -- Fixed an initialisation problem when
                     slScheduler was not a static/global.
 

Audio/README.sgi

@@ -2,6 +2,17 @@
 Building SL for SGI.
 ~~~~~~~~~~~~~~~~~~~~~~
 
+There are two options, depending on whether you want to use GCC or
+the standard SGI C++ compiler.
+
+GNU G++:
+
+   % make sgigcc
+   % su root
+   % make install
+
+SGI C++:
+
    % make sgi
    % su root
    % make install
@@ -11,3 +22,6 @@ Building SL for SGI.
 Header  files   go into /usr/include/SL (analogous to /usr/include/GL for graphics)
 Library file(s) go into /usr/lib
 
+When you link, be sure to include to -laudio
+
+