LimeWire: or the Return of Napster
The first version of Napster allowed anyone on the internet to share music with anyone else. The music industry killed Napster because, they said, it violated their copyrights on digital music. Digital Rights Management (DRM) was conceived to protect copyrights to digital media. iTunes, Napster V2, and others were created to fill the need for music downloads that protect the rights of the music publishers.
But the demand for open file sharing didn’t go away. In some ways it has only strengthened over the years since the victory of the music industry over Napster. Witness the growth of programs like LimeWire. While LimeWire accommodates DRM one has only to look at the content available to see that most of it is in MP3 format and lacks license information.
To get a quick overview of LimeWire follow this trail
I found on Trailfire.