aiff_hdr_chunk_t
total_size = size + sizeof (aiff_hdr_chunk_t) +
offset = sizeof (aiff_hdr_chunk_t) + (2 * sizeof (int)) +
offset = sizeof (aiff_hdr_chunk_t) + AUDIO_AIFF_COMM_CHUNK_SIZE +
aiff_hdr_chunk_t hdr_chunk;
aiff_hdr_chunk_t hdr_chunk;