Mirror Mirror replaced "Aintcha Bitch.. apparently it appears on the Clean Version of Vitiligo and not the Explicit Version solely because they couldn't clean up Ain't'cha Bitch or was simply easier to replace it completely..
It was also featured on the Strange Noize Tour '08 Sampler..
In explicit form, mind you. Rob came on here and said that due the content of Ain't'cha Bitch, they couldn't realistically clean it up for the clean release, and thus they gave Mirror, Mirror to the clean version as a replacement instead of leaving them one track short. Though as mentioned, it was later released in explicit form on the Tour CD. The clean version of Vitiligo also had a slightly different play order too.
The way you guys just seem to come off the top of your heads with this shit kind of scares me...what's the deal with you two anyways? Are you some kind of Tech N9neologists or something?
For those that don't know, he was a producer/DJ.
A lot of people know him for his work with the Samurai Champloo soundtrack, although he's done more than that.