AU is an audio format created to be used on Unix and Sun Microsystems based machines. AU has grown to be the standard audio format used on most Unix platforms.
Because AU is not a very common audio file format on the Mac platform, users will frequently convert their AU files to more popular audio formats.
When converting AU files, users will have the option to configure their destination file's bit rate and audio channel.
Furthermore, users will also be able to edit the output file's metadata, such as the artist name, song title or genre, as long as the output file format supports it.