For info on WINE...
http://wiki.winehq.org/Debunking_Wine_Myths
For 99% of windose programs . there is a Linux alternative , usually free , however DJ software is very thin on the ground at the moment.
Free ware
http://www.hitsquad.com/smm/linux/DJ_MIXING/freeware/
and of course ultramixer.
http://www.ultramixer.com/
Daryll