The following link, if it works, has two audio presentations, both very short.

The "video" at the top of the screen is less than five minutes long.
In it, two of the committee speak who are former students of William Appling, a committee which has worked since Appling's death to prepare his Scott Joplin recordings for release. The recording plays as background while they speak to the camera.

Scroll down to the second "video," and when you click play,
there will be a ten-minute sampling from the beginnings of six tracks of Scott Joplin played at the piano by William Appling.
The titles are, in order:
Stop Time Rag (non-musical noises and vocalizing by William Appling)
The Entertainer
Antoinette: March Two-Step
Gladiolus Rag
Scott Joplin's New Rag
A Mexican Serenade "Solace"

NOTE these are only the BEGINNING MINUTES of each piano piece, none of the pieces are heard in their entirety.

Fundraising and Publicity Campaign at Indiegogo