ITunes says iPod is full. Impossible! Please help me.

Question

When synched to iTunes my new 60GB iPod is read as near full, in fact it states at the bottom, underneath the scroll bar, that I have used 49GB. Remarkably, directly below that, where it lists the amount of songs, time, and space on my iPod it says that I have 1600 songs, a total of 8.5GB. I cannot imagine why iTunes would issue me a warning saying it would not be able to update the rest of my library as my iPod does not have enough space. Furthermore, I have only backed up less than a gigs worth of documents on my iPod, by simply dragging and dropping into the iPod folder under My Computer. So, the only data on my iPod at this point (to the best of my knowledge) is the original software, my 1GB of information, and my 8.5GB of music. Which means to me, that I should have about 46GB of free space, where is it??!!!
Update: There is a folder I had tried to place on my iPod the other day entitled Music Videos (disk use is enabled), which contained all of 6 videos, due to some error, it stopped transferring. I chose not to try to upload it again, and I went to delete the newly created folder in my iPod's folder. That is all it was, a folder, named Music Videos. 0 Bytes. I would not delete, giving me a very Windows response: "Cannot delete file: Cannot read from source file or disk." Today when I looked at my iPod in My Computer, the Music Video folder has several folders and files in it, with strange encryption (*=╧Φεj.╗σô), and none of them contain anything, or take any space as they are all 0 Bytes. Yet, when I select the Music Video folder and click Properties, it informs me that the folder is 21GB large. When I try to delete the folder I receive the same error message. How is this possible?!

Answer 1

I did, it completely wiped my iPod, except for the folders themselves, and I received an error message at the end of the updater along the lines of 'reformating error.'
Unfortunately, I am still unable to put music, etc. back on my iPod. And this time, iTunes does not recognize my iPod, even though my computer sees it as "Jacen Horns" iPod.
Also, I share jonathan kelly1's
jonathan kelly1, "aarrrgghhh! its driven me insane!", 05:03pm Sep 1, 2005
opinion that iPods are advertised to work completely with USB 2.0, and I should not have to go out and buy a new PCI card, plus docking port. Not to mention, I already have a new powered Firewire/USB 2.0 PCI card, and nothing else is plugged into it, and I have tried every port (also, I reinstalled my card into another slot, just in case).
I am going to see a Genius on Wednesday, just to see if they can resolve my problems. I'll keep everybody posted on the outcome.