What is ID3 tag?
A.ID3 tag is special sections within an MP3 file in which information about the artist, album, title, etc. can be stored. During the development of MP3, the ID3 tag has changed a lot. Today there are two versions which are used: ID3v1 and ID3v2. The primary difference between these versions is: ID3v1 only contains entries for the title (30), artist (30), album (30), defined genres, year and a comment. The numbers in brackets tells you many characters an entry can contain, because the entry length is limited. These limits do not exists in the ID3v2 tag, and not only are entries are no longer limited in their length, there are also a much greater number of entries possible, like songwriter, web addresses, art picture etc. Tag and M3U supports all ID3v2 tag fields that use Winamp, but you can also edit ID3v2 tags created in another program. Tag and M3U NEVER deletes any unknown tag fields. ID3v2 tags are stored in the beginning of the mp3 file, that’s why it takes so much time to write it
