The previous posting on this subject perhaps needs some clarification.
The MIDster Punch booklet and software for building your own music
roll punching machine is still available from me and I can be contacted
at bobessex@aol.com.geentroep [delete ".geentroep" to reply] or for
some more detail and pictures, etc., through my web site at
http://www.bobessex.co.uk/ 

Reuben Grieger produces excellent plans and printed circuit boards,
either empty or populated, for the MIDster Punch machine and he can be
contacted at rgrieger1@optusnet.com.au.geentroep [delete ".geentroep"
to reply].

The MIDster system has now been available for ten years, but whilst
hundreds of machines have been built in that time, it is true to say
that interest is now decreasing.  Perhaps the movement away from
punched rolls and towards MIDI systems is the reason.

Best regards,
Bob Essex

 [ See http://www.mmdigest.com/Archives/KWIC/M/midster.html  -- Robbie