Ableton Live is a great tool for Live remixing - just ask Ableton Artist Kutski. Check out this video, in which he cuts up Shy FX's jungle classic, "Original Nuttah", with an APC40 and Live: Curious to try this kind of live remixing out for yourself? Kutski has also produced ...
Our friends at Novation have a couple recently-released controllers that play very well with Ableton Live. First up, the Impulse keyboard:
Additionally, the Novation Twitch DJ controller can control Live easily, using the Live Twitch Translator (download it here). Check out a tutorial of the set up:
Lastly, here's controllerist Moldover busting out some mashups and beats in Live, with the Twitch. Watch out for the classic Can - "Vitamin C" break toward the end: