Okay. First, you should know that I just switched to mac. My iPod was synced to my PC, and 2 days ago I plugged it in while enabling disk mode and manually managing music so that I could transfer my iTunes library. Fine. Today, I plugged it in and it showed in iTunes, and on my desktop. Then, I un-checked the manually manage music, as I wanted it to autosync on my Mac. Again, it worked. My music was on my iPod, including new songs I bought on the Mac. Then, I clicked the podcast tab to update my podcasts and switch the autosyncing to the Mac. I clicked sync, and then "all" and then pressed "apply". Then, I got an iPod error (long number, didn't have the presense of mind to write it down), and my iPod disappeared from iTunes. It still said Do Not Disconnect on the screen. I had no way (that I knew of) to eject it, so I pulled the iPod out of the dock. I reset the iPod. I put it in again, and it showed up in Finder, but could not find the volume. It didn't show on the desktop or in iTunes. Again, I pulled it out, with no way to eject. Now, my iPod works fine, it's just getting iTunes and my iMac to recognize it. Which, I think it does, but it says something about a missing volume. Any help is greatly appreciated. I just got my iPod replaced in October for a hard drive failure and I'd like this dilemma to go more, er, smoothly?