I've added another variation to the audio devices, /dev/audioctl.
It behaves like /dev/sound (i.e. no default settings on open), but
it only accepts ioctl(), no read, write etc.  In contrast to /dev/sound
it can be opened even when the audio device is in use, so it can
be used to manipulate the audio device whilst running.
You should run `MAKEDEV audio' in /dev to make the new device if
you want to use audioctl(1), because it has been converted to use
the new device for greater flexibility.

        -- Lennart