Output channel question with Aria Player (Multi) in Sonar by BandLab

I don't know how many instruments you have in Aria, but one way around this is to use one instance of Aria for each inst. Very simple. Of course, if you have 16 insts. or more, you're going to have a lot of Arias. Which may or may not be a problem, depending on your setup. What I do is to use one or two instances of Aria (Play, Kontakt etc). I use the Pro Channel to adjust reverb on each inst, before they all get sent to Spaces Reverb. You can do the same with the EQ in Pro Channel. This way you can avoid the problems with multiple channels, which can be an issue with Aria, judging from other threads I've seen here.

Thankx for your answers. 
@michael Diemer: Each instance of Aria player would create 16 tracks for one instrument folder, I'd have to delete 15 of them and I'd have to be careful which channel to retain. My RAM is at 16GB, I never tried out before if 11 instances of Aria Players (plus additional other synths) would be overload. Sorry, doesn't seem to be a practicable solution - and in earlier times I didn't have that issue.
@mettelus: What you describe is the default insert dialogue. I just checked it and found there was all as you described. I could crosscheck in ProTools what happens there, just to find out if this is a new issue pertaining exclusively to Cakewalk Sonar.
But to solve the thing here it seems I have to export each instrument track as audio file, open a new session consisting only of those exported files, so I could apply my audio-fx there. Since I have a tempo change in thie project, I'd have most simply saving the old project under a new name, and replace any MIDI- or instrument track by audio files before importing the audio files from my first project to the new one. - But hey, I didn't have to do this in earlier times.
BTW what's up about uploading screenshots here: This always used to work. One picture tells you more than my descriptions. I click on "attach images" and get 2 possible ways: 1) entering a link to the picture in some cloud, 2) "from gallery / upload", but selecting the 2nd option should promt the windows explorer to open so I could pivk the image file from my PC - but that does not happen.

Let's see what will happen next: A new update of Cakewalk by Bandlab is available now, I'll check after installation.
_ _ _ _ _ _ _ _ _ _ _ _ _
No changes.
I've been placing the same issue at "Make music", there I could also upload my screenshot.

 
New, June 12th, 09:00 p.m.CEST, having had the latest Windows update:
No changes.
But the people from "Make Music" had replied, 
"Thanks for contacting MakeMusic Customer Success. I will try to provide as much help as I can here but this may be outside of the scope of support that I can provide. The routing into VST instruments is going to be based off of the host program and not the plug-in. So, it may be best to also consult with Cakewalks documentation too for more information. 
Your ARIA Player and engine are the most up to date so there is nothing to worry about there. Typically in a host DAW, you would have MIDI channels that route to the separate channels in the Multi ARIA Player plug-in. The plug-in itself then gets routed to the outputs of the DAW. I can't say for certain if this is how Cakewalk works but I would guess that it is similar. " 
So is there anyone over there to please give me a hint how to solve this?
Thankx.

This looks fine, I will check. Thankx!
I will tell you if it works.

Daibhidh
Mad_Musicologist,

I would recommend making a track template for the Aria Player with 16 stereo outs.
That way, any time you want to work with it, all the hassle will be taken out of the way for you.

Step One

Sorry, first question: What kind of a project? Can I start with "empty", or with 16 MIDI tracks?

Daibhidh
Step Two

This is the standard dialogue, it seems. At least, when I proceed, I get the same box.

Daibhidh
Of course now you'll have to create tracks with midi data and
send each midi track to a different midi channel within Aria.

That's why I was asking about the 16 MIDI tracks from the start of the project.

Daibhidh
And if you don't want all the 16 audio outs going to the master bus,
you'll have to change them all.

Just select them all, and hold down CTRL while changing the bus, like so.

I am missing something here: I selected all the 16 Aria Player tracks, press CRTL, but my dialogue looks very different from what you are showing me. Again, I keep having trouble to insert an image that I did not post anywhere else. That used to work some months ago - ?
Mine shows "Master", "Metronome", and "preview", no "keyboards". 
Above that, I have the list with all MIDI tracks, and for MIDi Track 2 it says "Aria Player (Multi) 1 Out3/out4: stereo.
So I'd expect the sounds triggered by MIDI track2 (with all notes being MIDI channel 2, of course) to come out at "Aria Player (Multi) 1 Out3/out4: stereo. In fact however, they come out at "Aria Player (Multi) 1 Out1/out2: stereo.
This is the status I had when placing my question here. 
Am I missing some tiny detail, please?
 

Thankx, "scook",
It is my intention to route
the MIDI from track 1 to Aria stereo output 1,
the MIDI from track 2 to Aria stereo output 2,
the MIDI from track 3 to Aria stereo output 3,
and so on.
Currently I do not get this:
MIDI 1 goes to Aria stereo output 1,
MIDI 2 goes to Aria stereo output 1,
MIDI 3 goes to Aria stereo output 1, and so on.
Do I have to create for each MIDI track a new bus then?
This, I thought, was the thing that happens inside the Aria player. 
Apparently wrong?
I will have to try this out...
 

Thanks, "scook", 
the other friends here seem to suggest that I can handle that routing from outside the Aria player, and this is also what the people from "Make Music" say (I quoted that passage yesterday), so I am a bit confused. 
Honest, when going through the Aria players surface, I do not find any place where I could route the audios from one channel (MIDI in) to a specific Aria output channel.
What am I constantly misunderstanding, please? 

Sorry we jumped down the wrong rabbit hole at first on you.
 
A couple quick notes with this situation which can save you some future work -
 
1) The outputs inside of ARIA will revert if you load an Ensemble, but they will stick if you just replace instruments of an already loaded Ensemble. After you set those to all 16 stereo channels, save the Ensemble (left click in the Ensemble name area) inside of ARIA itself. You will want to repeat this if you swap instruments around and may use that Ensemble again in another project.
 
2) After you have done all of the work for an Ensemble and routed it inside CbB, be sure to save that as a track template (and verify it inserts properly). This was mentioned earlier in the thread, but you will want to save that track template with ARIA configured properly as well so that inserting the track template comes up "fully functional."