I have an iPod Touch and a Windows 7 PC, and have been using them together worry-free for months. Now, today all of a sudden, i can't drag and drop music files from folders on my PC to the iTunes library or directly to the iPod in iTunes. When I try to drag them, I get a circle with a diagonal line. What gives? I can use the "Add File to Library" option in iTunes and then drag them from the Library to the iPod, so I do have a workaround, but I want it to work correctly. Anybody have any suggestions?