As one can turn off the speakers, unplug them or set their volume to an
inaudible level, a message saying that sounds are available should the user
want to hear them would be more informative than lots of (or even a little)
programming to determine if the user has muted the sound. After all, he/she
might not _want_ to hear the sounds and have muted them deliberately.

Just my opinion, of course.

Alan Knight