New here and to Sonar LE...
 
I have everything running smoothly in Sonar.  Monitoring (Input Echo) is functioning great... while Sonar is the active window.  As soon as I switch Windows focus to another window (even Sonar Help), monitoring goes silent and track meters show no sigal activity.  Is this normal or is there some setting I've missed?

Hi, the problem is that you have "Share drivers with other programs" checked in your options. You'll need to disable that. To do so, go to Options -> Audio -> Advanced. The location may have changed if you're using more recent versions of Sonar.

That did it.  Thanks.