Thanks for that. I read it on the wiki, and on another forum from someone who also read it on the wiki. It certainly seems to do the job, and a whole lot more although the interface is naturally a lot more complex than my MidiREX. Incidentally, the MBLoopA is basically the same as a MidiREX with fancy graphics so I already have that. I'll build a Midibox anyway. Looks like a great project.