I believe you've hit the center of the ``-=smirk=-''.

But, to get back to what initially brought this up, there's a huge difference in my mind between printing that out for personal use (or trading mp3s for personal use) and selling a product that includes copyrighted music without recompense to the copyright owner.

There's always the possibility of sharing being the motive in free distribution (whether it's technically illegal or not), but when you start selling products you don't have the right to sell, that's where the line is definitely crossed for me. (And I realize that in this hypothetical situation, it would be more akin to sharing than selling, but it's cutting it way too close for me.)