Six colleges in the US have agreed to allow Napster to provide access to its online-music service.

The colleges join the University of Rochester and Penn State University who signed up with Napster's parent company Roxio earlier this year. According to reports, the universities are receiving the service - which normally costs $9.95 a month - at a discounted rate.

The participating colleges include Cornell University, George Washington University, Middlebury College in Vermont, University of Miami, University of Southern California and Wright State University (Ohio).

The universities are free to set the price that students must pay for discounted access. This has lead to criticism that students may end up footing the bill directly – even those who don't use the service.

Penn State and the University of Rochester provide Napster service to their students at no extra charge, according to an Associated Press report.