Creating playlists in iTunes can be as simple as dragging a few songs, or as complex as creating smart playlists that refer to other playlists and use nested conditions to pick songs that meet specific criteria. In this week's column, I answer three questions to show just how complex smart playlists can be. While perhaps not the same as the smart playlists you want to make, they are good examples of the complexity that is available with smart playlists in iTunes.Related StoriesiOS app contains potential malwareWindows 8 Update: 2nd-generation Surface tablet