1. How MP3 Music Files Work
MP3
About MP3 Ripper
About MP3 Player
Other audio file format
references

2. MP3
MP3 is one of the compression voice file formats for a
digital voice.
If you sacrifice a tone quality, a higher compressibility
can be obtained.
Because of that, the data compressed by MP3 is likely to
be used for an illegal distribution of music.

3. About mp3 Ripper
● Mp3 Ripper is rip
sound from DVD and
CD and so on.
● After this sound is
changed mp3.

4. About mp3 player
● There is mp3 players.
● For example,iPod
series(HDD),USB
player.
● If you buy mp3
player,you should buy
HDD player better
than USB player.

5. Other audio file formats
WMA format
WMA format is an audio data
compression technology
developed by Microsoft.
WMA is also supported with
various devices now.
WAV
WAV (or WAVE), short for
Waveform audio format, is a
Microsoft and IBM audio file
format standard for storing an
audio bitstream on PCs.
It is used game sound, sound
effects.

6. References
http://kakaku.com/item/01309511995/
http://www.moongift.jp/2007/11/free_dvd_mp3_ripper/
homepage2.nifty.com/.../Electone_UX96/WMP6.gif
http://en.wikipedia.org/wiki/Windows_Media_Audio
http://en.wikipedia.org/wiki/WAV