Go this steps:
-Execute C:\MRP373\Rec.bat
-Record up to 12 minutes real CW-audio from your
receiver.
-Then exit Morse Decoder by typing Esc Esc
-Then Execute C:\MRP373\Play.bat and operate
like advised in readme.txt
-Watch the text window and see Decoder results
in time.
If you detect any problems then please:
Have a look at our "general hints" here
Get info how to handle "error messages" here