midi to relay

hi, i found that,


and would want to verify if and how, i can use it with midi file directly, not from an instrument.

or did you made one that is even simpler.

thanks, for simple answers, but precise,

the user choose 1 midi file some where, net or own play list,
and send it to :

multiple Microcontroller, at least 5, for at least a 100 output, midi notes.