Spencer Chase said,  "This machine looks much more useful [than the
Cricut]."  I looked at the web pages for the various Graphtec Imaging
Products.  The CraftROBO is one of that company's cutter/plotter
machines, also sometimes known as "vinyl cutters" since they can cut
vinyl letters for signs.  My only experience with cutters is with an
ancient small Roland device called a Stika, but this class of machines
can do amazing things.

The Graphtec model CE5000-40-CRP will cut 375 mm (14 inch) wide paper
in lengths of up to 30 meters. That covers a whole bunch of roll sizes.
It probably can not cut the thickness required for music books.
http://www.graphteccorp.com/imaging/ce5000/ce5000_specs.html 

Mechanical resolution is said to be 0.005 mm, with repeatability
precision 0.1 mm or less per 2 m*1.  That looks pretty good to me when
applied to paper rolls with a 250 mm width and 1 mm holes.

Graphtec has a variety of drivers available for Windows, ranging from
Windows 95 through 64-bit Windows 7.  I would guess that that would
allow it to simply be used as a printer.  If that is true, it might be
possible to use MIDIBoek to create roll images from MIDI files and then
"just print them" to the cutter.

With a price of about $1100, I'm not likely to buy one to experiment
with, but the CE5000-40-CRP and MIDIBoek combination could be a very
simple solution to the question of creating rolls for many instruments.

Wally Venable