Pete, I have encoders for the manuals and pedals, and special encoders
for stop tabs for Ahlborn Sound modules, and a piston control system
for the Roland D110 Module with Theatre Organ Voices (as found on
E-Bay), as well as 64-note decoder/driver boards for 90 ohm coils or
higher, as well as the high current boards with power MOSFET drivers
for several amperes.

You had two subjects; the other subject, music file standards, would
be nice.  There are scripts for Cakewalk to help with re-mapping MIDI
data for the right note formats.  For some applications, I can supply
special code in the encoders and decoders to match special needs or
applications, if the data can be expressed on a spread sheet.  If you
would like more information, contact me at <soundres@foothill.net>

Vern Jones, Sound Research