examples: Monitoring MIDI messages using JACK – relpipe-in-jack: @id for the MT-32 part
The tiles come from the Pipepanic game: http://www.users.waitrose.com/~thunor/pipepanic/and are licensed under the Free Art Licence: see COPYING-ARTWORKThey were slightly extended in the Relational pipes project: see tiles48-relpipe.xcf