Mixx is an multi-platform open source virtual music mixer or DJ software. It gives you lot of features which you can use to be almost like a DJ even with just your computer. It can also be set to record your disc jockeying so that you can play it over again or share it with some one. And if you have a mixer, Mixx will make you a real DJ.

Mixx has two channels, allowing you to play two songs simultaneously or one after the other. Volume and bass etc. are controlled through knobs which can be adjusted by scroll buttons of mouse. However, my installation of Mixx gives me an error message while closing. Nothing serious, but hope you don't get to see it.

Mixx