This is exactly what Napster is doing. They are making it possible for their users to explore music for noncommercial purposes. MAjor labels are afraid of Napster cutting into it's money from sales. Many users not only trade MP3's, they also read about artists and articles about current news events. There is so much research to defend the users and their intentions.
Research shows that users of the service are more likely to spend more than non-Napster users.
It is helpful in the fight to keep Napster alive that they have artists such as Fred Durst and Dave Matthews speaking out. Hopefully the messages that they convey will help Napster through their struggle with Congress and opposing artists and they will be able to keep their software online.