proaudio Jack-smf-utils is a set of two utilities - jack-smf-player and jack-smf-recorder - whose purpose is to play and record MIDI streams from/to Standard Midi Files (i.e. the files with .mid extension) using JACK MIDI. There is also smfsh, "SMF shell" that is kind of interactive, command line SMF files manipulation tool which started its life as a debugging aid. And finally libsmf, C library for loading, writing and manipulating the contents of SMF files.