Audacity: Recording off of Real Player or other WAVE stream, Vista?

When I had XP, I used the Audio Record Wizard that allowed me to record off of "WAVE" audio so whatever was playing through the sound card (and through my receiver to the speakers) would be recorded. This was used for streaming audio for radio shows. I still use that same sound card with Vista I did with XP, a Creative Digital USB Audio Card and this computer also came with a RealTek HD Audio card as well. I'm given options to record from both sound cards, but only from the digital/analog/mic input sources of the sound cards, I get no options to record off of the "computer" itself like Real Player.

Can this player record the "WAVE" audio sounds; if so, how do I set it up?

thanks in advance