I did a mix for the "Warp20" boxset a couple of years ago. It's an hour long piece that incorporates 60+ tracks spanning the first 20 years of Warp's back catalogue. Someone's put the entire mix on YouTube with links to some of the original videos of the tracks used in the mix. Maybe by the time you click through the whole mix will have been linked up?
I'm assuming the boxset is sold out now as I couldn't find one for sale anywhere other than eBay where it goes for about £100 or Amazon where used copies start at £159. Here's some info about the release on the Bleep site and the Warp20 site.