4GB Problem

I have a 4GB clip that I got a couple weeks ago. Yesterday when I opened windows to add more music it said it was syncing my files, but it actually deleted everything off of it.  I then added a few songs and reopened windows and it  started deleting my files again. Any help would be appreciated. Thanks.

Do you have some sync program (such as Windows briefcase or such) set on your computer that is doing this?  This seems to be something on the Windows side, not the Clip.