text: what is the midi mapper?   the midi mapper in microsoft windows allows you to customize windows to work with your particular midi hardware and software. it functions much like the windows printer and video drivers -- once they are correctly configured, you can use any windows program with these devices.  i'm sure you already know that midis are music files. a midi file is a data file. it stores information, just like a text (ie, ascii) file may store the text of a story or newspaper article, but a midi file contains musical information. specifically, a midi file stores midi data -- the data (ie, commands) that musical instruments transmit between each other to control such things as playing notes and adjusting an instrument's sound in various ways.     http://math.boisestate.edu/gas/midi/html/midi_mapper.html  setting it up http://www.sseyo.com/products/koanpro/html/koan_setting_up_the_midi_m.htm