AUDIO_AU_FILE2HOST
AUDIO_AU_FILE2HOST(&fhdr.au_offset, &offset);
AUDIO_AU_FILE2HOST(&fhdr.au_data_size, &hdrp->data_size);
AUDIO_AU_FILE2HOST(&fhdr.au_encoding, &hdrp->encoding);
AUDIO_AU_FILE2HOST(&fhdr.au_sample_rate, &hdrp->sample_rate);
AUDIO_AU_FILE2HOST(&fhdr.au_channels, &hdrp->channels);
#define AUDIO_AU_HOST2FILE(from, to) AUDIO_AU_FILE2HOST((from), (to))