Nice hit on the Pioneer DDJ-T1.
So far I have played with VDJ 7 LE (came with my controller), the free VDJ 8 Home version, Traktor 2.73 (thanks to steve149), and Mixvibes Cross DJ(picked it up for $39 on sale). My favorite so far is Mixvibes. Since I am not a real DJ
, I use the Synch a lot. Mixvibes does that and "auto loop" seamlessly, plus it has a good song preview (like VDJ), not the idiot one Traktor uses. It also has this new feature called "Match" for a quick library scan of songs similar to what's playing, that actually works. There is a user posted mapping for the DDJ-T1 on their website. Not trying to sell anything, just my two-cents.