Harder electronic music by various artists (some famous). I don't remember if this really was the music used in the Animatrix DVD, but it really doesn't matter. Afteryou rip the CD, don't be ashamed to delete track 3 or move it into another album; it really doesn't fit.
I am not sure why esh doesn't like track 3 (so what if it doesn't fit!? it's LAYO and BUSHWHACKA!) on the Animatrix soundtrack, but otherwise, Animatrix is an awesomeawesomeawesome CD. I've never seen Animatrix, so I actually got a hold of the CD only because I wanted Junkie XL's two tracks on there (Beauty Never Fades and Red Pill, Blue Pill), but ended up liking the whole thing together.