public static function TextEncodingNameLookup($encoding) {
    // http://www.id3.org/id3v2.4.0-structure.txt
    // Frames that allow different types of text encoding contains a text encoding description byte. Possible encodings:
    static $TextEncodingNameLookup = array(
      0   => 'ISO-8859-1', // $00  ISO-8859-1. Terminated with $00.
      1   => 'UTF-16',     // $01  UTF-16 encoded Unicode with BOM. All strings in the same frame SHALL have the same byteorder. Terminated with $00 00.
      2   => 'UTF-16BE',   // $02  UTF-16BE encoded Unicode without BOM. Terminated with $00 00.
      3   => 'UTF-8',      // $03  UTF-8 encoded Unicode. Terminated with $00.
      255 => 'UTF-16BE'
    );
    return (isset($TextEncodingNameLookup[$encoding]) ? $TextEncodingNameLookup[$encoding] : 'ISO-8859-1');
  }