How do I get Audacity to record both my microphone and my programs' sounds simultaneously?

I can get Audacity to record what I say into my microphone and sounds made by my other programs, but I can't record them at the same time. Can Audacity do this? If so, how? And if not, is there a free program that can do this?|||No i believe the new verision cant


try just recording one and then the other and playing linking them as one track instead of two