So  the  quick,  only,  and likely safe solution if beep is not beeping
when you want it to is (as root):

# chmod 4755 /usr/bin/beep

(or wherever you put it)

The one snag is that this will give any little nitwit  the  ability  to
run  beep successfully - make sure this is what you want.  If it isn’t,
a slightly more complex fix would be something like:

# chgrp beep /usr/bin/beep

# chmod 4750 /usr/bin/beep

and then add only beep-worthy users to the ’beep’ group.