MP3.com

MP3.com is a web site operated by CNET Networks providing information about digital music and artists, songs, services, community, and technologies. It is better known for its original incarnation, as a legal, free music-sharing service, popular with independent musicians for promoting their work. It was named after the popular music file format, MP3. It was shut down on December 2, 2003 by CNET, which, after purchasing the domain name (but not MP3.com's technology or music assets), established the current MP3.com site.

Original version

History

MP3.com was co-founded in November 1997 by Michael Robertson and Greg Flores, as part of Z Company. Z Company ran a variety of websites: filez.com, websitez.com, and sharepaper.com, purchased from Lars Matthiassen.

The idea to purchase the MP3.com domain arose when Flores was monitoring search traffic on filez.com, a FTP search site whose first incarnation provided an easy to use graphical interface for searching for various types of files including software, graphics, video and audio. The first version of files utilized an existing free search engine developed by graduate students (led by Tor Egge, who later founded Fast Search and Transfer based on this search engine) at the Norwegian University of Science and Technology. Flores noticed in his review of the search logs that people were searching for 'mp3'.

MP3

MPEG-1 or MPEG-2 Audio Layer III, more commonly referred to as MP3, is an audio coding format for digital audio which uses a form of lossy data compression. It is a common audio format for consumer audio streaming or storage, as well as a de facto standard of digital audio compression for the transfer and playback of music on most digital audio players.

The use of lossy compression is designed to greatly reduce the amount of data required to represent the audio recording and still sound like a faithful reproduction of the original uncompressed audio for most listeners. An MP3 file that is created using the setting of 128 kbit/s will result in a file that is about 1/11 the size of the CD file created from the original audio source (44,100 samples per second × 16 bits per sample × 2 channels = 1,411,200 bit/s; MP3 compressed at 128 kbit/s: 128,000 bit/s [1 k = 1,000, not 1024, because it is a bit rate]. Ratio: 1,411,200/128,000 = 11.025). An MP3 file can also be constructed at higher or lower bit rates, with higher or lower resulting quality.