You should plan on using SDL2-mixer if you want to use compressed sound files. Wav are good for little sound effects, but if you plan on playing some background music too, you will need to use compressed sound file, because a Wav file for a 3 minutes sound is really big.
Like they said on their website : "SDL_mixer is a sample multi-channel audio mixer library." But, if you want only to play with wav files only, SDL2 can do it as well. Personally, I'll go with sdl2-mixer.