RE: Playing sounds on error

Another alternative would be the use of the STRPCO/STRPCCMD combination

of commands. 

Yes, although I'd be worried about the delay in time. Not that it's
long, but it's longer than something running, and this should have quick
response time. FWIW, I think you could send simply the path and name of
the sound file, windows should figure out the player from the file
association. HOWEVER, that approach would also interrupt anything
playing in the current media player playlist, like it just did for me
(off to restart Roger Waters...)

-Walden