The guy Jim Canavan saw exhibiting new "nickelodeons" sounds like the one
who advertises his "conversions" of old (non-player) pianos to new
"nickelodeons" at:-

    http://www.grantspass.com/music/pianos/musicbox/

It looks like they only make conversions from old non-players.  I suppose
this saves an old piano without wrecking an old player-piano at the same
time which surely must be the best of two evils.

Regards

Adam Ramet
u9504734@bournemouth.ac.uk