SYNOPSIS
#include <allegro.h>
SAMPLE *load_wav(const char *filename);
DESCRIPTION
Loads a sample from a RIFF WAV file. Example:
   SAMPLE *sample = load_wav("scream.wav");
   if (!sample)
      abort_on_error("Couldn't scare user!");
RETURN VALUE
Returns a pointer to the SAMPLE or NULL on error. Remember to free this sample later to avoid memory leaks.

