Reads the Vorbis comments of a FLAC or Ogg file, the metadata those formats
carry: TITLE, ARTIST, DATE, LOCATION and COMMENT among the names
in common use, and whatever else the software that wrote the file chose to
add. A file holding no comments gives an empty result rather than an error.
Details
Fields are named as the file names them, which is a convention rather than a
specification: the format reserves no names and a writer may use any. The
vendor string, which names the software that encoded the audio, is reported
as vendor.
See also
readMetadata() reads this and every other metadata format a file
carries at once.
