研究MP3的结构，就不能不研究ID3标签。ID3标签是MP3音乐档案中的歌曲附加讯息，它能够在MP3中附加曲子的演出者、作者以及其它类别资讯，方便众多乐曲的管理。缺少ID3标签并不会影响 MP3的播放，但若没有的话，管理音乐文件也会相当的麻烦。如果你在网上download MP3，里面多半已经写有预设的ID3讯息。ID3，一般是位于一个mp3文件的开头或末尾的若干字节内，附加了关于该mp3的歌手，标题，专辑名称，年代，风格等信息，该信息就被称为ID3信息-The structure of the study the MP3, it will have to study the ID3 tags. ID3 tags are additional messages of the songs in the MP3 music files, it can show additional song in MP3, and other types of information, to facilitate the management of many songs. The lack of ID3 tag does not affect the playback of MP3, but if not, manage your music files will still be very trouble. If you download the MP3 on the Internet, which probably already written the default ID3 message. ID3, is generally located within an mp3 file at the beginning or the end of the number of bytes, additional information on the mp3 artist, title, album name, age, style, this information is called the ID3 information