Glossary:

• ID3: A "tag" or collection of data, embedded in MP3 files, which identifies the song with information like artists, title, album and genre. These tags can be edited. After putting and transferring MP3 audio files with ID3 information to your PSP, You can see the information when you enjoy music. There are two unrelated versions of ID3: ID3v1 and ID3v2.
• ID3v1: ID3v1 was created in 1996 and quickly became the de facto standard for storing metadata in MP3s. The ID3v1 tag occupies 128 bytes, beginning with the string TAG. To maintain compatibility with older media players the tag was placed at the end of the file. Some players played a small burst of static when they read the tag, but most ignored it, and almost all modern players will correctly skip it.
• ID3v2: ID3v2 tags are of variable size, and usually occur at the start of the file, to aid streaming media. They consist of a number of frames, each of which contains a piece of metadata. For example, the TIT2 frame contains the title, and the WOAR contains the URL of the artist's website. Frames can be 16MB in length. Textual frames are marked with an encoding bit, though mojibake are still common.