try virtual dj ive used it for 5 years not had a problem

virtual dj mate ive used it for ages you can get it from any computer market or download it but be carefull u dont get the trial edition

futuredecks pro is a cheaper alternative and can be better in some respects. i belive it still £59

i have also used virtual dj for 5 years worth buying it solid only ever got it to crash 2 times in all that time

but in same breath i also use futuredecks pro tho only had it few month it never crashed yet im sure it will some day