说明：  文件压缩技术的日新月异使得MP3成为时下最烫手的音乐格式，优质的音乐随着0与1的排列迅速散布到世界各地，撼动人心。何谓MP3？MP3的全称是MPEG Audio Layer 3，它是一种高效的计算机音频编码方案，它以较大的压缩比将音频文件转换成较小的扩展名为.MP3的文件，基本保持原文件的音质。MP3是 ISO/MPEG标准的一部分，ISO/MPEG标准描述了使用高性能感知编码方案的音频压缩，此标准一直在不断更新以满足“质高量小”的追求，现已形成 MPEG Layer 1、Layer 2、Layer 3三个音频编码解码方案。MPEG Layer 3压缩率可达1:10至1:12，1M的MP3文件可播放1分钟，而1分钟CD音质的WAV文件（44100Hz，16bit，双声道，60秒）要占用 10M空间，这样算来，一张650M的MP3光盘播放时间应在10小时以上，而同样容量的一张CD盘播放时间在70分钟左右。MP3的优势是CD难以比拟的。
(File compression technology with each passing day makes the MP3 music format to become among the most hot, high-quality music quickly spread with the arrangement of 0 and 1 around the world, to stir the hearts. What is MP3? The full name of the MP3 is MPEG Audio Layer 3, it is a highly effective computer audio coding scheme, a larger compression than audio files into smaller extension. MP3 file, keeping the sound quality of the original file. MP3 is part of the ISO/MPEG standard, ISO/MPEG standard describes the use of high performance perceptual coding scheme audio compression, this standard has been continuously updated to meet the high-quality small amount of pursuit, has been the formation of the MPEG Layer 1, Layer 2, Layer 3, three audio encoding and decoding programs. MPEG Layer 3 compression ratio up to 1:10 to 1:12,1 M MP3 files can be played one minute, one minute of CD-quality WAV file (44100Hz, 16bit, dual-channel, 60 seconds) to take up 10M of space, so calculation, a 650M )