There is no direct Input to Output relation with the AR16. DAW/computer audio returns with either be on channels 15/16 or 17/18.
Studio One mixes to these output channels by default. Capture isn't that flexible with outputs. Capture is designed more with the StudioLive and RM series that do have a more direct input channel to output channel relation when using Capture. That is to say, in Capture, input channel one will record on to track one and will playback to channel one. This is not so with the AR's. In Capture, you'd have to move all recording tracks to channels 15/16 and or 17/18 so you can mix them back to the AR console.
Little confusing but that is how it is.
Think of Capture and a quick multi track recorder (inputs only).
Studio One is where you get the best of both worlds.
