Have been available since October (6th October 2008, to be precise) at Beatport, and I've only just found them!
Sisters Of Transistors - The Don / Pendulum (Remixes)
This Is Music: THISIM005D
05:58 The Don feat. Milo Smee (Chrome Hoof Remix)
04:31 Pendulum feat. Simon Lord (Lord Skywave Bump Remix)