Is it possible to have two or more MIDI tracks - the outputs of ARIA - having the same MIDI source - where the notes are. Thus, in other words, one MIDI track filled with notes is playing thru a multiple ARIA outputs, each having a different instrument.
MIDI-score -----> ARIA output 1 with alto flutes
...............-----> ARIA output 2 with plain flutes
...............-----> ARIA output 3 with oboes
it is a silly example, but this pictures the idea.
Sure - In the Aria mixer, set all of the instruments you want to group in that way to the same MIDI channel.
If your track is recorded on MIDI Channel 1 - then set all of those instruments to MIDI Channel 1.
The controls under the name of each instrument in the mixer are Tune, audio channel out, then MIDI Channel. Aria defaults to the sixteen available slots being assigned to MIDI Channels 1 through 16, but you can always change those assignments. You could have all 16 instruments responding to a single MIDI Channel if you wanted.