Libsndfile is a library of c routines for reading and writing files containing sampled audio data.

various versions of wav (integer, floating point, gsm, and compressed formats); microsoft pcm, a-law and u-law formats; aiff, aifc and rifx; various au/snd formats (sun/next, dec au, g721 and g723 adpcm); raw header-less pcm files; amiga iff/8svx/16sv pcm files; ensoniq paris (.paf); apple's core audio format (caf) and others.