Reply to Help with Ableton Live 8 and MPK25

Hello! I am currently working on incorporating Ableton into my VCI100 Traktor sets, and I recently got an Akai mpk25. When I plug it in everything works fine, except for the knobs and play/record/stop buttons don't do anything. They are sending midi signals but nothing is happening. Do I have to map these myself? I was under the impression that MPK25 was preset with the Ableton software. Any help would be appreciated