Kazaa uses technology developed by FastTrack, whose software is also used by popular file-swapping sites Grokster and MusicCity's Morpheus system.
The order takes effect in 14 days and imposes a fine around US$45,000 (100,000 guilders) a day.
"We don't know how the judge wants us to stop copyright infringement," Kazaa attorney Christiaan Alberdinck Thijm told CNET News.com's affiliate in the Netherlands on Thursday. "We feel as if the judge didn't put much time and effort into this part of the verdict."
The court's decision comes in a suit brought by Dutch copyright organization Buma/Stemra, which has been in on-and-off licensing negotiations with Kazaa. The software maker has counter-sued, charging Buma/Stemra with antitrust violations for refusing to negotiate.
Thursday's decision ordered Buma/Stemra to resume licensing talks, which were broken off last month after the Recording Industry Association of America and the Motion Picture Association of America filed a copyright infringement suit in the United States against Kazaa and several other makers of file-swapping software.
Staff writer Jasper Koning reported from Hilversum, News.com's Evan Hansen reported from San Francisco, and Michelle Tan contributed from Singapore.
This is rediculous! You cannot ever stop people from sharing programs and music. Napster was a pioneer in this field and should never have been shut down. Doing so has created a monster.
Every music company in the world could sue every file sharing system in the world but the truth is that it cannot be stopped. I have several thousand mp3's and a burner. Do the math. I know of people with tens of thousands of mp3's and share them on the internet.
If kazaa shuts down, there will be another one, and another one after that, and so on...
Maybe if software wasn't so bloody expensive (yes microsoft - I'm talking to you) maybe you may SELL some and not have it being downloaded instead.