This is to play (non interactively) a message to the speaker of your
system (/dev/audio). The idea is that you hit a key at the main menu
and you record a message. When the message is finished (DTMF), the
system plays the recorded message to /dev/audio and removes the
temporary file.

An idea would be to use a named pipe for interactivity. You could also
imagine that you could then speak two ways with the user (operator
chat)

BUGS
   - Must change the script to use correct PVF tool.
