looks like a linker problem, make sure you're using the correct library files for SFML (You need the 64 bit xcode version).
You could take a look at this short guide: http://sfml-dev.org/tutorials/1.6/start-osx.php
Still getting the same errors. But thanks for the link! Still more help than the official Forum
EDIT: Wait wait, no no! There are more errors! Here's a screenie!
I don't like XCode, but I can't have CodeCompletion with Code::Blocks!