Hi, I have been amusing myself with the stand alone version of the GASP, loading standard MIDI files and seeing how the Steinway handled them. I found these in a collection of MIDI's made from old piano rolls. I believe these are of Fats Waller himself playing his music. They use the Under the Lid perspective with the Ballroom 1 ambience.
http://www.box.net/shared/static/6v3hkbboc0.mp3 (Alligator Crawl)
http://www.box.net/shared/static/fsnr9ifeo8.mp3 (Honeysuckle Rose)
These show off the stride piano capabilities of the Steinway. Enjoy!