How long it will take remains to be seen. We hope they will be a substantial part of our overall filtering solution. The company has come under fire for its inability to completely block trading of copyrighted songs in compliance with an injunction issued against it on March 5 by US District Judge Marilyn Hall Patel. Judge Patel threatened to shut Napster down permanently if it did not block unauthorised music. Napster has been using a screening process which matches file names with artist and title names.
Users create new file names as they download songs on the service.
The Recording Industry Association of America has given Napster a list of more than 300,000 copyrighted songs.