A query for Warren Trachtman, from a near illiterate about music
recording.  I see the generation of the recordings, as you describe
and offer, as a two-stage process:

1. The roll is scanned to generate a computer file;

2. This file is used, with the sampled piano sounds, to generate the
recording.

With our world-wide activity, is it practicable for people other than
Warren to scan rolls, and then pass on the computer file?  What are the
hardware and software requirements for the scanning process, and what
is the file format?

I can understand the scanning of photos and other graphic images, and
the direct generation of computer-readable files by digital cameras,
but the process of getting from, say, a paper roll with holes in it to
a CD playable on normal audio equipment is a different story.  I imagine
there are other MMD readers who would appreciate some understanding of
the process, particularly as it appears practicable to use this as a
"production" process.

At this stage I haven't any applications for generating a recording
from a pianola roll -- we haven't even a pianola in our house.

This reminds me of a joke from a bygone era:

  Customs Officer: "Have you any pornographic literature in your
  luggage, Sir?"

  Incoming Passenger: "Pornographic literature!  No, I don't even
  own a pornograph."

Peter Edmonds
Perth, Western Australia