This mimetype is deprecated. You should still support it, but avoid using it to assign new mimetypes.
Instead, please use audio/aiff
AIFF (Audio Interchange File Format) files store uncompressed signed audio samples inside an IFF container. There's also a compressed variant, called AIFC with the same mimetype.
AIFF chunks provide native metadata. In addition, although it is not in the specification, an ID3 chunk is often used to include ID3V2 metadata.
File types
.aff .aif .aiff