I have an iPod Shuffle and it worked fine when I had a Mac. I recently had to change to Win 7 64bit for work reasons and now I'm having a terrible problem with my iPod. I can't add music to it! I downloaded iTunes, installed, built the library, etc. When I plug in my iPod it is recognized. I hit Autofill and it seems to be working fine for a couple of minutes. After that, an error comes up saying that the songs were not found and could not be copied (I know the files are in the correct directory in the computer) and the iPod disconnects from the computer. I tried deleting the library and rebuilding it to no avail. Any ideas?