My understanding is that C3 MIDI is note 24. C1/32'CCCC is 0, C2/16'CCC is 12, C3/8' CC is 24. Am I missing an octave somewere? I am fighting with getting the .ini to .syx conversion done on this computer which is running Vista. I may have to fall back to XP or 98 to make the conversion. The MIDI in and out and links to the core board seem fine. MIDI 60 is middle C or in pipe length terms, an open pipe about 2' long. Thanks, Bill K