Trying to find software that would emulate a dual CD player that a DJ would use...except you would cue up two virtual CD's from your computer? Anybody heard of this? Free would be nice... I want to real time mix two tracks back and forth...
I've seen VirtualDJ do exactly this (and it has the name to fit), not free for commercial use but you can take the home version for a spin and see. It also has other DJ-centric features like beat matching, pitchshift and such.