Hi. There are several DJ programs around and as NavySealer said the subject is well covered.
Some of them are:
Mix Meister Pro v4.01
Native Instrunments Traktor DJ v1.12
ALCATech BPM Studio Professional v4.6
Visosonic/Numark PCDJ Red v5.1011
Carrot Innovations Virtual Turntables v1.80
DJ Master v3.01
DJ Power v3.86g
Megamix 98 Radio/Club/Club Pro Edition
Megamix 2000 Radio On Air/Club Pro Edition
Atomix MP3 v2.1
I would highly recommend BPM Studio Pro v4.6 and PCDJ Red v5.1011 as they are flexible and easy to use (especially the PCDJ Red). They can both be combined with external serial controllers (you can hire the Numark DMC01 for the PCDJ) and make your life easier.
Download PCDJ Red 5.1011 UPDATE (NOT THE DEMO) from
_http://www.visiosonic.com and get a working licence code from _http://www.cracks.am). Good Luck with your party and mind that it may sometimes need to look how the program is going (I would not trust any automation software for a whole night without keeping an eye on it for any crashes as there may be at times you don't want or expect!).
P@nos