Hi Robbie,  Samick got back to me with a courteous response, but
unfortunately it's "no cigar" on the roll-playing digital pianos.
Here's their response.

> From:   samick_music@earthlink.net (Samick Music Company)
> To:     FHimpsl@aol.com
> Date: 97-03-11 14:43:45 EST
>
> The paper roll piano in the background is there just to give an "old
> time feel" to the ad.  While our DigiPlayer pianos have keys that move
> up and down to the music like the old player pianos, everything else
> about them is the latest technology (while still affordable to the
> consumer).
>
> The idea of a digital player piano which is capable of playing paper
> piano rolls and well as MIDI files is a very interesting idea and
> probably one which could best be achieved by a small specialty piano
> manufacturer rather than a large volume company such as ourselves.
> QRS, which made the paper roll piano shown in the background of our
> ad, may be able to help you with info.  Their number is 716-885-4600.

 [ I wonder how large their volume is...  -- Robbie