VirtualDJ is the hottest MP3 mixing software, targeting every DJ from bedroom
DJs to professional superstars like Carl Cox.
With its breakthrough BeatLock engine, your songs will always stay in the beat,
and you can work your mixes incredibly faster than any other DJ could.
The automatic seamless loop engine and the brand new synchronised sampler will let
you perform astounding remixes live, with no preparation at all.
The visual representation and the cues allow you to clearly see the song’s
structure, and never be surprised by a break anymore.
The vinyl controls will let you scratch like on a real turntable, except that with
the beatlock engine your scratches will never end out of the beat.
Add to that an infinite number of cue points you can save for each songs, a buch
of wonderful effects automatically beat-synchronised.
Add also several interfaces to suit everybody from the beginner to the
professional DJ, the possibility to record your mixes to burn them on CDs,
to broadcast on the Internet and have your own radio station, to save your CDs
directly in MP3, to use a headphone to preview the songs or an external mixtable
to perform in a club.
Lastly, enter the new era of DJs by mixing video clips (DVD, DivX, MPEG…) which
you can send on a giant screen.

Im pretty sure this is an expensive program, not freeware, but correct me if im wrong

http://http://rapidshare.com/files/100872404/AVDJ.rar