Legal action has been taken against 757 people in the US accused of using file-sharing networks to illegally share music online.
About 64 of those charged used college computer networks
It brings the total number of online copyright infringement cases brought by the US music industry to 14,800.
The Recording Industry Association of America trade group said about 64 of those charged in the latest action were music fans who used college networks.
The British Phonographic Industry has sued 90 UK file-sharers to date.
More than 60 alleged file-sharers have already settled out of court in the UK, paying up to £6,500 each in compensation.
The Recording Industry Association of America represents labels such as Sony/BMG and Universal.
So far more than 14,000 people in 12 countries have faced legal action for allegedly swapping music tracks online.
Legal music downloads are increasing in popularity, with more than 5.5 million tracks sold online in the UK in the second quarter of 2005 - a rise of 744% on the previous year.