I notice a difference in how Genius handles live songs between my Mac and my iPhone. For example, when I create a Genius playlist using a live version of "Black Dog" by Led Zeppelin (Album: How the West Was Won) from within iTunes, this song is used as the first song of the Genius playlist. However, when doing the same from my iPhone, Genius instead lists the studio version of the same song (Album: Led Zeppelin IV) and my live version is nowhere to be found. Why would the iPhone behave this way? Anyone else noticed this issue?