Anyway to capture screen with audio while Sonar is playing?

Yes you need to have two sound cards. One that has any PC sounds (not just windows sounds but all sound going through the system) routed through there and have the other sound card routed to Camtasia.  It is fairly straight forward connecting a sound source to Camtasia. I use my external mixing console for this purpose. I have my internal on-board sound card routed to a track on my mixer and with my instruments and mic and everything plugged into the mixer going into the PC via a stereo, built in, USB connected ASIO supported sound card that the mixer came with. That is also how I play live over backing tracks in various online jam or music communities such as camfrog and paltalk etc.
 
Hope this helps
 
Mark

Thanks Mark.  I was kinda hoping to avoid having to route the sound out of the computer and back in again, just out of laziness mostly, but your solution may be the only way.  It also occurred to me that I can simply use camtasia to record the screen but not the audio, and simply use sonar to record the audio and then bring them together in either sonar or camtasia after the fact.  I'm still holding out hope that there might be some kind of software solution to allow me to route the output of one card, say, the onboard realtek that came with the computer, into the input of my Echo Gia.  Or, since the gia has several outputs, maybe I could route all the computer audio to one of them, which I then feed right back into the input of the gia, and ultimately use one of the other gia outputs with Sonar.

I use the Microsoft Expression Software and set my interface ports to 'loopback' so that the audio playing out through them is routed back through the inputs. Then I set Microsoft Expression to record the two RME Inputs I looped back. Then I can talk into a microphone and play audio and it's all recorded as a screen capture.
 
I don't do this on a fancy computer. A 6 year old laptop.
 
http://www.youtube.com/user/gswitz101
 
These are some of the videos I've posted.

Screen capture :
 
http://forum.cakewalk.com/Software-for-making-sonar-videos-m2854843.aspx

Fred Holmes
Give this a try
 
http://www.bbsoftware.co.uk/BBFlashBackExpress.aspx
 
Fred

bb flashback still brings up the same issue where you have only windows sounds and no sonar audio, ive tried bbflashback.
its the reason I moved to camtasia, it offers the same audio configurations except camtasia is 10 times better.