bug in obj_NWC2NotePitchPos.inc

Applies to github version labeled: nwsw on Mar 30, 2013 NWC 2.51 Beta 1

Quote from: line 53

static $ClefCenterTones = array("Treble"=>34,"Bass"=>22,"Alto"=>28,"Tenor"=>26,"Drum"=>22);

I would suggest:

Quote

static $ClefCenterTones = array("Treble"=>34,"Bass"=>22,"Alto"=>28,"Tenor"=>26,"Percussion"=>22);