Drag & Drop Export
To export a Standard MIDI File, grab an instrument name or container and drag it over to a DAW or your desktop. Wait a few seconds for the mouse pointer to change to a MIDI icon before you drop it. Only after the delay will Synfire turn the internal drag and drop operation into an external one.
If you don't want to wait, you can also tap the space bar once you are hovering over the target in order to activate the external export.
Exporting Chords
To export plain MIDI chords of any progression, grab the green Harmony outlet on the Palette page, or anywhere else where you find this outlet, and drag it to your DAW or desktop. The MIDI file will contain the chords as they are interpreted by the global Chords instrument.
You can use
to summon all progressions found in the arrangement and open a Progression Editor on them. This is especially worthwhile for songs whose chord changes you would like to share with other users.