MP3 CD

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MP3 CD is a term used to refer to compact discs (usually CD-R or CD-RW) that contain MP3 files. Discs are burned in data mode (like a CD-ROM), as opposed to Red Book format as with standard audio CDs (CDDA).

MP3s are supported by many modern CD players, including DVD players. Some CD players are also capable of playing WMA and Ogg Vorbis files. Sony-brand players are also able to play audio encoded to their ATRAC format (originally created for the MiniDisc).

Because of audio data compression, the disc does not have to spin all of the time, thereby saving battery power. The song is buffered in memory, which also provides protection against skipping.

The number of songs a disc can hold depends on how the songs are encoded. A standard audio CD (650 MB) can hold about 20 songs, an MP3 disc about 150, and a data CD about 185 AAC song files. A DVD can hold almost five times as many songs as a CD.^[1]