How to use multiple instances of Play properly?

[MogDog]

Hi,

I'm trying to share two instances of Play between 12 or so samples. The first 6 I routed through channels 1-6 of Play on an aux track. Then I added another instance of Play under the first insert (same aux track) and added them on instruments 1-6, and then couldn't hear the first six instruments.

So I figured I had to put the second set of instruments on channels 7-12 of the second Play. Still, the first six instruments are no longer working.

It's obvious to me that I have no idea what I'm doing, and I'd really appreciate some guidance.

[MogDog]

I should mention that when I solo one of the first six instruments, I can see the piano keys moving along in Play - just no sound.