The Copyright Chunk contains a copyright notice for the sound.  The text
field contains a date followed by the name of the copyright owner.  The
chunk ID '(c) ' serves as the copyright character.  For example, a
Copyright Chunk containing the text "1991 Commodore-Amiga, Inc." means
"(c) 1991 Commodore-Amiga, Inc."  The Copyright Chunk is optional.  No
more than one Copyright Chunk may exist within a FORM AIFF.