LMP cars typically still uses foot clutch, even though they don't actually use it when driving. F1 does without it since I think its hard to package it in the tub. I think the BBC broadcast over the OZ GP weekend said Ferrari's steering wheel have 7 paddles behind it....2 for shifting, I think 2 for clutch, and others maybe for a KERS/DRS/blah blah.
As for what Audi's paddles are for, thats really anyone's guess...they are all just switches....so conceivably they can be set to be anything...
University of Toronto Formula SAE Alumni 2003-2007
Formula Student Championship 2003, 2005, 2006
www.fsae.utoronto.ca