How BitTorrent Works

Instead of downloading a file in its entirety, BitTorrent gathers pieces of the file you want and transfers them simultaneously from other sources. How does it put the pieces back together?

How does Napster work and why is there such a huge fight around it right now?

Get a refresher on the original Napster and why it caused such a storm about intellectual property laws.

How File Compression Works

Compression programs can eliminate 50 to 95 percent of file size in seconds, but when you open up the file the data is still there! Learn how compression algorithms cut down on bytes without killing data.

How Gnutella Works

File-sharing allow millions of people to freely trade MP3 and video files on the Internet. Is it legal? How are the files exchanged? Is there a central database? Find out how the file-sharing structure works and see why it makes it difficult for record labels to sue.

How MP3 Files Work

CDs took care of storing music digitally, then MP3 files took it to the next level, compressing audio data down to a manageable file size -- without losing sound quality! Learn about the miracle of MP3.

How the Old Napster Worked

While the original Napster got sued out of business, dozens of free file-sharing utilities have popped up to take its place. Find out how the old Napster worked and why it was vulnerable to legal attacks.

What is Aimster?

As a file-sharing program, Aimster is generally more secure because users have complete control over their files. This AOL program can also hook up with your IM friends.