A buffer containing the data to be sent to the audio device.
int
len
The length of buffer.
RETURNS
TRUE in case of an error, FALSE if succesful.
FUNCTION
Checks if the audio device is opened (fdaudio is not equal to -1) and, if so,
uses the write C-function to send the data to the device.
NOTE
The sound generation functions only work on Sun workstations running SunOS
and containing an AMD-AM79C30A sound controller chip.
This function is used by the sound_sample routine.