Playing (and recording) from the UNIX prompt

Type "gaintool &" to bring up the I/O volume control interface.
Make sure your I/O is set right, and your phones/mic is plugged in the back of the tower.

To PLAY, type "s16play filename".

To RECORD, type "s16record -s 60 -f 16000 -o newfile.d". Type Control-c to stop the recording when you are done speaking.
    (-s 60 specifies 60 seconds of recording)
    (-f 16000 specifies 16KHz sampling rate)
    (-o specifies output filename)