The sounds are distributed in a file called
glaunch.dat, which is non-standard archive file, sort
of like Zip, used by Allegro programs. Using this file
is easy to code againts, but the only way to edit it is
to use the Grabber tool that comes with the Allegro
source distribution. It makes it hard for users to
customize the sounds, though, since this special tool
is required to edit it.
Possible solutions are to use a Zip file to hold all
sounds (not sure how this would work with Allegro), or
just put all sounds as individual files in a separate
directory. There is also a binary version of Grabber
on the allegro.cc web site.
