I use to be able to record streaming audio with Sound Forge. How do I it in Sonar?
 
I'm using an M-Audio Delta 1010.  Normal inputs are 1/2 in.  My outs are 1/2 out.  I use to be able to setup the 1010 software to send a mixer signal to the recording software. That doesn't seem to work in Sonar.  Am I missing something?

I have recorded streaming audio in wavelab....I set the input audio to my internal sound card, Realtek speakers, or Realtek HD Stereo Mix. And in Sonar you'll have to change your drivers to MME instead of ASIO
Give that a shot and see what happens..Good luck!