This has nothing to do with the C binding of SFML. You should post help questions in the help section.
The link looked strangely suspicios to me, but a scan showed that it's fine, here's an embedded image (hosted on imgur) for the paranoid ones:
As for the error, my guess is that you're mixing either debug and release builds or builds of different VS versions. If you're in debug mode, you need to use the debug libraries. If you're in release mode, you need to use the release libraries. If you use VS 2013 you need to recompile SFML (or use my nightly builds), so it matches VS 2013.