Bit torrent is an application for sharing files. It can be a music file, video file or movie file, and the theory is all about file distribution. It works this way, the person who is uploading is known as the seeder and the peron downloading is known as the leacher. So long as there is one seeder, the leachers can download the file, and at the same time the leacher can share the file with his other leachers also known as peers.

The process from seeding to downloading is all hidden and cannot be tracked, unless you share your IP address with the world. Once the leacher finish downloading, he automatically becomes a seeder, and helps to upload to other leachers.

Because there is no central server, the process cannot be tracked.

For those who is interested to download using bit torrent, you can try the following bit torrent clients:

Azureus
http://azureus.sourceforge.net/

Bit Comet
http://bitcomet.com/

Bit Tornado
http://bittornado.com/

For more details on bit torrent, you can visit this website: http://en.wikipedia.org/wiki/Bittorrent