You have one set of settings for "Release" and one global set of settings, this is not very clean. The consequence is that you have duplicated settings, and missing settings.
You should rather:
- define all the common stuff in the global configuration (compiler and linker paths, common compiler flags, ...)
- define all the Debug specific stuff in "Debug"
- define all the Release specific stuff in "Release"
-lsfml-audio should be written before -lsfml-system, the order is important (as stated in the tutorial).
And, most important: you add "SFML-2.0\include" instead of "SFML-2.0\lib" in the linker search paths.