Zenph have been around for several years now.  They analyse an
analogue audio recording to work out the note details to create a file
that can operate a modern solenoid player piano -- Disklavier, etc.
It's easy to say but exceedingly hard to achieve acceptable results.

One has to suspect a great deal of manual intervention in the overall
process, be that to tune-in the software or manually assist its
results.  Absolutely no details are given of how it's done!  The public
output so far is tiny, just three CDs: Rachmaninoff, Glenn Gould and
Art Tatum.  It's an interesting and hard-to-read business model.

The only CD I've got is the Tatum, and it doesn't quite work for me
-- in sustained listening it somehow lacks the humanity of Tatum's
originals.  By all accounts the classical ones are more effective,
which may indicate something about the way the software's been tuned.

Zenph use a Steinway with a 'SE' player custom-built for them by
Richard Shepherd in England.  Richard developed it, in association with
Wayne Stahnke, for a project with Boesendorfer that came to nothing
(and originally for his own personal use at home, as he preferred his
own Steinway to the available Bösendorfer SE instruments).

It's based on the Stahnke SE system concepts, but with entirely new
electronics and mechanical design by Richard; in this case, SE stands
for Shepherd Edition!  I know he's been talking with other leading
piano manufacturers to see if there's any interest, so maybe it'll
appear one day.

Julian Dyer