the CTK496 would make some sound whenever it receives the note information
even without any setting on TonMap. It probably needs to check and see
if the USB-MIDI interface driver would install correctly and then PC
would detect the driver.
As for "I have TonMap=G but it always reverts to "00 PIANO 1" because I
know which button to press next.",
does this inquiry mean the original setting value would turn into "00 PIANO
1" after reception of MIDI information?
If yes, the program change in the keyboard would work properly.
There would be possible trouble with the keyboard if playback won't go with
right installation of the driver and right MIDI-IN/OUT connection.