CUE image file is A cue sheet, or cue file, is a meta data file which describes how the tracks of a CD or DVD are laid out. Cue sheets are stored as plain text files and commonly have a ".cue" file name extension. CDRWIN first introduced cue sheets, which are now supported by many optical disc authoring applications and media players.
For an audio CD, a cue sheet specifies titles and performers for the disc and its tracks as well as the names of one or more audio files to be used. MP3, WAV, and BIN files are often used, although some programs support other formats. Cue sheets are especially useful when burning or listening to live sets where all tracks are recorded in one file.
Cue sheets are also used for many types of CDs in conjunction with an image file. The image file generally has a ".bin" extension.