On 64 bit systems use C:\Program Files (x86)\VideoLAN\VLC\vlc.exe as Cmd.
On 32 bit systems use C:\Program Files\VideoLAN\VLC\vlc.exe as Cmd.
Set Params to -I dummy --dummy-quiet --play-and-exit --no-loop --no-repeat "C:\test.wav" replacing "C:\test.wav" with the path to your audio file. Attention: the audio file path must include the file extension (like .mp3 or .wav for example) and be enclosed in double quotes.
For automatic doorbell only usage, uncheck Save Full Video, uncheck Save Small Video and set Drop detections shorter than to 0 seconds.