File-sharing network LimeWire has been ordered to halt all distribution and support for its peer-to-peer network platform.
The court ruling (PDF) by US district judge Kimba Wood forbids the company from operating and distributing its products under copyright violation claims.
Record labels had accused LimeWire of knowing that the service was " overwhelmingly used for infringement" and knowingly operating a service that was used for infringement.
The company is also accused of directly marketing to Napster users who had previously violated copyright laws, and failing to implement any copyright protection measures.
LimeWire chief executive George Searle said that, while the company is disappointed by the ruling, it will seek to continue operations with other products.
"We are extremely proud of our pioneering history and have worked hard for years to bridge the gap between technology and content rights holders," he said.
"However, at this time, we have no option but to cease further distribution and support of our software."
The move is the latest in a battle over online file-sharing that has raged for more than a decade.
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