In message <Pine.GSO.4.33.0206162210150.27110-100000@math.rice.edu>, Richard Ra
>This mostly botheres me in an xterm attached to ksh and in emacs under X.
>I could probably find applications-pecific knobs to twiddle (or hack the
>sources) to eliminate the beeps there.  But, I'd really like to know if
>there's a nice way to do this at the system level.

If you have sound:
mixerctl -w inputs.speaker=0

Otherwise, not sure.

-s