From the Born Slippy maxi-single from Underworld
http://www.amazon.com/Born-Slippy-Un.../dp/B000003RJJ
Underworld - Born Slippy NUXX (Deep Pan)
Underworld - Dark + Long (Dark Train)

I've also converted over the majority of the WipEout XL soundtrack CD that was released.

From Darren Price's "Under the Flightpath" album
http://www.amazon.com/Under-Flightpa...4181354&sr=1-1
Track 1 - Airspace
Track 2 - Lose No Time

Tone Depth's "Rumblefish" is available for download in .mp3 for $0.99
http://mp3.rhapsody.com/tonedepth/rumblefish

It is a kickin' tune from Montreal DJ Tone Depth which you'll find excellent for zoning.