The SoundBadKey setting defines the .WAV sound file played when the wrong key is pressed.
A .WAV sound file name and optional folder path.
SoundBadKey=C:\MySounds\CHORD.WAV (file located in the C:\MySounds folder)
SoundBadKey=Data\CHORD.WAV (file located in the \Keystroke\Data folder)
SoundBadKey=CHORD.WAV (file located in the \Keystroke\Forms\Sounds folder)
DING.WAV (file located in the \Keystroke\Forms\Sounds folder)