[CM] compile

[Bill Schottstaedt]

In the CL CLM, you have to compile the instrument before using
it -- when you run it, it looks for the shared object file (*.so)
that results from the translation from CL to C.  So, instead of 
evaluating the tubebell definition, (compile-file "prc96.ins"),
then (load "prc96"), then you can use tubebell in with-sound.

In the Scheme version of CLM, you can just evaluate the
instrument definition.