This is a tutorial for the FL studio users. The tutorial shows how to assign the GPO4 / Aria plugin to the corresponding midi out channels and also how to assign a mixer channel per instrument. This allows up to 16 instruments for each instance of Aria player.
http://www.youtube.com/watch?v=J4ctL9prJ5U (wasn't sure how to embed it into here)
Best viewed in HD, and please feel free to leave feedback on the youtube page.
Any questions please pm / email me.