A little more information would probably help. Without it, I am assuming you are moving from an old mac to a new mac. In that case, just copy the whole iTunes folder from your Music folder to your external drive, and then to your Music folder on your new computer. You will keep all apps, music, date added, last played date, etc, etc, etc. Has the added bonus of keeping the library key the same so if you use an iPhone or iPod it will not complain about syncing to a new library. (I imagine all of the above holds true for a windows-> windows move, although I don't know the paths. Doubt it will work for a window->mac move or vice versa)