When I run a song on Nw player it works and plays through
correctly but on NWC it runs for a while and then turns my
computer off
Both programs are identical in play back, except that the Player ONLY allows play back via the MIDI Mapper. Change NWC to use just the MIDI Mapper on play back, remove any input device selection, and now NWC will behave just like the Player.
now both programs do it
I have tryed switching to midi mapper