The music used in the newer Everett Kaser Software games are in the MIDI
format.  For most of the music files in Solitile for Windows and Dinner With
Moriarty, the MIDI files were recorded using Midisoft Studio while Everett's
cousin Loretta Kaser played them on an electronic keyboard.  The other music
for Sherlock for Windows was entered into Midisoft Studio by hand, note by
note.  For MESH: Hero's Hearts, MESH: Hero Defiant, and Descartes Enigma, the
music was simply copied off a CD of licensed MIDI music.