The smfplay utility plays a MIDI file. While playing, it can route events from one midi(4) device to
another. To stop performance, send an interrupt signal to smfplay (for instance by pressing control ^C on
the terminal). The options are as follows:
-m Use metronome. The metronome will follow tempo changes and time signature changes in the
midi file.
-x Synchronise to an external midi(4) device. If the -i flag is used then playback will be
synchronised to the input device else it will be synchronised to the default device.
-y Send midi timing information to the default device. Useful if the output device is a slave
MIDI sequencer.
-gmeasure Start playback at the given measure number.
-dfilename Default midi(4) device on which to play the midi file. If not specified, the content of the
MIDIDEV environment variable will be used instead.
-ifilename Alternate input midi(4) device. Voice events (notes, controllers, etc) received on the input
device will be sent as-is to the default device. Without this flag, the default device will
be used for input.
The smfplay utility is an interface to midish(1). If more specific features are needed, the user may
consider using midish(1).