I want to write a simple Python script that can
cause the n900 to sound an alarm, probably as loud
and piercing a shriek as possible - I'd like to be
able to hear it from 500 feet away outdoors.

I imagine there are several layers of ways to produce
such a sound; would you please sketch a bare outline
of these different methods, so I can read-up
and compare?

Thanks,
TFJ