If you mean a USB DJ Mixer, then try some of the freeware DJ programs such as: VIRTUAL DJ; CROSSDJ FREE; CUTEDJ. there are others as well.
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Call yourself DJ mixer
mixer is when you ix the music only but he dj amp i for all the gear like speakers mixers turntables and stuff.............
The most economically successful DJ mixer in the DC area is Pioneer DJM-700. It has a four channel mixer and it is available at a price of 89 dollars.
Depending on the Mixer itself, you might hook it up to a multiple of things. DJ mixers are usually connected to 1 or more sources of sound. In most DJing set-ups, these imput items would be turntables or CD players. Depending on the amount of "inputs" the mixer has, you can add a variety of sources. On the "out" connection, the mixer is generally plugged into an amplifier so you will be able to hear the sound that is produced. You might also have a CD burner, PC, or other items connected to your "out" plugs.
An open source dj mixer is a totally free-of-charge means of editing and controlling the inputs and outputs of audio (and sometimes video) programs.
It is used to release the track to the audience.
A DJ would use a 3 channel mixerif he or she is using more than 2 sources to play music (i.e. - two turntables and a microphone). Here is an article you might find helpful: http://www.dj-tips-and-tricks.com/dj-mixer-tips.html.
The Behringer DX626 Pro DJ Mixer Factory B-Stock can cost around $79.00 new. It's a good brand and fairly reasonibly priced.
There are some equipment recommended for a beginner DJ. The most important include DJ turntables, DJ cartridges, DJ mixer, slipmats, DJ headphones, RCA cables, etc.
The American Audio M-52 USB Mixer/Sound Card is best for running a mixer. anonymous@oola.com