"Mp3 stands for Mpeg 1 Layer-3 audio. It is one of the most common music file formats in use today. It is also widely traded over the Internet, and is renowned for its small file sizes and excellent quality. With regular audio CD's you can only fit around 74 minutes of audio onto one 650MB CD-R Disc. This limits the amount of tracks you can have on one CD and creates the problem of you having to make 3-4 CD's just to have a variety of your favourite songs. It also might prove to be a problem if you like to travel light and the extra cds bother you. A 650MB CD-R disc holds up to 170 4MB 128 kilobit mp3s compared to the basic CDDA redbook audio format's (normal audio cd) 13 tracks. Since conventional CD players are not capable of reading the mp3 format unless you convert it to CDDA. You are forced to stick with a miserly 13 4min tracks. Evergreen and a few others quickly realised this problem and came up with a solution, the Portable MP3/CD Player."
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