I haven't heard anything on how the band feels about Napster. I am curious though. I don't think we should look to any band or anyone to take a stand for or against Napster or being political. There are bands out there that do take stands politically like, Fifteen, Propagandhi, and Operation Cliff Clavin just to name a few. That is their right to say whatever they want, but to say that there should be more bands that should voice their opinions is non-sense.
Bands write songs about what they know and what they are passionate about.
Maybe the majority of bands feel that it'seasier to write songs about lost love than the repercussions of trading with China. I think for the reasons that I mentioned before, and maybe they could feel that they might be alienating a part of their audience. I don't know you'd have to ask the bands. It's only speculation. As they should be.