well, makenote doesn't actually send midi data out. it just formats a message. use noteout to actually send the data to the port. connect it to noteout and it should work (with the selectable channel outputs, as you desire).
see the helpfile for noteout (pd/doc/5.reference/midi.pd)
------ http://USFamily.Net/info - Unlimited Internet - From $8.99/mo! ------