Thank you for all your responses. Please excuse my ignorance. I think part of my problem is the difficult (to me) EM-U sound card I have to work through. I open up PO and assign for example solo violin to channel 1. When I next assign I/O I notice I cannot change the I/O, it is always 1/2.
I then open Sonar. I get an error message that says certain tracks (all my audio) are assigned to silent output. I then open Sonar and in a midi track under Input I assign channel 1. Under output my synthesizer is routed thru Port 2 and that is the only option to get the PO to play. Unfortunately it also plays whatever my synth is open to also. Also, in midi track I can right click for vst load, it does not show PO. If I go to Options/Audio it shows PO there.
In an audio track there are no options for me to choose either input or output, although PO does show up here as a vst.
My 2nd probably related issue is PO seems to override my metronome settings. If I just open Sonar and go into settings I have choices to set my metro output. When PO is opened also, I have no output options (as in "none") when I go into metro settings.
Thanks again.
Van