If you are looking to get MIDI files and scans from European type
orchestrions (especially Hupfeld), let Robin and me do that for you
and the community at no cost, except for shipping.  We have a special
scanner to do this and, depending on the roll, we will be able to scan
the roll, make it into a TIFF [*.tif] file and translate to a standard
MIDI file.  But you might need to further arrange that file to play
on your machine if multiplexing is involved.

Julie Johnson and Robin Paepcke