To play DJ or create a new sound from several audio lanes, is not any more reserved for the pro. All that you need, it is of the inspiration, of audio lanes and Combiwave.
Combiwave is a program of sound mixing of sounds or audio lane. In her version Lite, free, she allows of only to play three audio files at the same time. It seems not much, but to try to take out a good sound from three different lanes.
