Hi.
I have a sound card with four independent outputs. I use outputs 1 and 2 to send the keyboard to the speakers, but I’d like to use output 3 (even in mono) for headphone listening.
I’ve configured it correctly in Cantabile, as you can see in captura1.png.
But I’m wondering if I need to add a new “add route” to each VST for each song I have (more than 100), specifying the in-ear monitor output (captura2.png), or if there’s a faster, cleaner, and better way. 
Thanks