I'm manually loading songs onto my Shuffle for a root canal tomorrow AM. Everything was going ok, and then it just stopped loading songs, and there are gray dots next to the songs from that point on. I ejected the iPod when it did this about an hour ago, and when I plugged it back in only the songs without dots had loaded. So I've been trying to put songs on again, and I just checked it, and it's happened again. What's the deal? I've been sitting here for 15 minutes and nothing has changed. The iPod is plugged into a USB 2.0 on the back of my ACD. Picture below. Please help!