>The other thing that really concerns me about this is how easily it could go wrong. Music, in particular, seems to be filled with legal landmines. Imagine hosting your own webpage for your band covering pop songs. Do you now have to fear federal prosecution?

I don't see anything in the law suggesting strict liability applies, therefore the state has to also show mens rea ("guilty mind"), i.e. the act was willful (or criminally negligent). Or am I missing something?