Very good free piano MIDI files for download:

• Terry Smythe's site
  Terry offers his large collection of reproducing and 88-note piano rolls converted to MIDI format. These files play marvelously on the Pianocorder!
• Tom Lear's Piano Roll Karaoke page
  Assorted piano rolls with karaoke lyrics added by Tom Lear. These are designed to play well using the Superscan Display Console emulation built into the Pianocorder Control Plug-in for WINAMP.
• Robert Perry's Piano Roll Scans
  Assorted piano roll scans in MIDI format
• International Piano e-Competition
  Each year, the world's top pianists compete in Minneapolis / St. Paul, Minnesota, performing on Yamaha Disklavier Pro pianos which record their performances for posterity. Yamaha makes these available on the competition web site in MIDI format, and you can download and enjoy them on your Pianocorder.
• Doug McKenzie's Site
  Excellent hand-played jazz MIDI files
• Sue Keller's Jazz and Ragtime
  Jazz and ragtime MIDI files
• The Primeline MIDI Library
  An extensive, well-organized collection of ragtime pieces in MIDI format (a few classical pieces are available too).
• John Farrell's site
  John creates terrific piano roll arrangements, many meticulously transcribed from vintage recordings of legendary jazz pianists.
• George Bogatko's original piano roll arrangements
  George is another exceptionally talented piano roll arranger. Some of his files also include secondary MIDI instruments such as xylophone parts etc.
• Warren Trachtman's site (ragtime MIDI files)
• Benjamin Intartaglia's site (piano rolls converted to MIDI format)
• John Roache's Ragtime MIDI Library
• Mike Meddings' ragtime MIDI files
• Fantastic Recital On MIDI
  Hand-played classical piano performances by Japanese pianist and composer Katsuhiro Oguri
• The Piano Bar
  Hand-played jazz standards
• Classical MIDI Piano Page
  A German site featuring classical and Christmas piano MIDI files.
• Classical MIDI Connection
  Classical piano MIDI files
• Rene's Piano Bar
  Sequenced MIDI files of mostly Spanish songs
• "Perfessor" Bill Edwards' Ragtime Archive
  A large collection of sequenced ragtime MIDI files
• Classical Archives
  Classical piano MIDI files

Quality piano MIDI files available for purchase:

• Spencer Chase's E-Rolls
  Spencer offers several CDROMs of reproducing piano rolls converted to MIDI format using his highly accurate, proprietary conversion system (free samples available online)
• Peter Phillips' MIDI
  Peter offers several CDROMs of reproducing piano rolls converted to MIDI format (free samples available online)
• Wayne Stahnke's Live Performance disks
  Mr. Stahnke offers some terrific recordings made using the highly-accurate Boesendorfer SE reproducing system he personally designed.

Additional sources of piano MIDI music, both commercial and non-commercial:

• QRS Music, Inc.
  QRS sells many of their classic piano roll arrangements on diskette in MIDI format. If you purchase this material, make sure you buy diskettes and NOT CDs (the CDs are specially-encoded audio CDs, not data CDs containing MIDI files).
• PianoSoftware.com
  This site sells material for QRS, Yamaha and PianoDisc systems, all of which are compatible with the WINAMP Pianocorder plug-in (due to copy protection on Yamaha disks, you will need to use a third party tool to copy the files to your hard drive prior to playback with WINAMP). If you purchase material from this site, make sure you buy diskettes and NOT CDs.