I have an instructional CD with Fiddle in right channel and guitar in left.  I have imported it into ITunes and also Windows Media Player so I have a WAV and a WMA on my hard drive.  When I play it in either player it plays fine but when I play it in my Sonar Platinum Media Browser or import it into an audio track, I only get the left channel.  I tried splitting the track since the right channel does show, but it just produces one track with guitar and the other is silent with a flat line- no wave action showing.
Any idea how I can import both channels into Sonar?
 
Thanks

Looking at it more closely after zooming in on the stereo track in Sonar, the top wave has a little movement and the bottom wave has a lot.  When I go to Track\Bounce to Track and choose Split Mono I get two new tracks and the right channel would not play until I panned it to the left.  The two new tracks that were created had the first track panned hard left and second hard right.
I wonder why I can't get the right channel to play in the original track before I split it?  I have seen a Master that has a left and right volume control in Sonar before, but can't seem to find it now.  All of my tracks are output to Master.  It seems the right channel is just turned all the way down but when I pan the track hard right, there is no sound.

You can import it into Sonar directly from the CD: File | Import | Import Audio CD.
 
I only mention this because maybe something went wrong with the other steps of importing into iTunes and ripping to a wav.  At least, you would only have one step and fewer variables.
 
Just a thought.

Sounds like a routing issue. Check your outputs within Sonar.

Do you use the same audio device for things like Media player and iTunes as Sonar?

I would look at those media files in AnyVideoConverter or similar free apps - to see which audio formats are there.
I've previously encountered that you get audio from first format, which may be Dolby Stereo, or 3.2.1 or similar.
 
http://www.any-video-converter.com/products/for_video_free/
 
Either way you will be able to convert to a format that Sonar accept.