Just trying to understand your argument...When you download, you are not importing. You are reproducing.
How do I "reproduce" something without having a copy of it to begin with? In other words, how can someone be accused of making a copy of a protected work when they never possessed the original work to make a copy from?
Isn't it more logical to say Allofmp3 made a copy of the work and sold it to the downloader? The downloader was not the producer of the copy.