iPod File Transfer Size Limit?

Besides it usual purpose, I've been using my iPod for a couple years as a portable storage device. For some reason though, I can't transfer media to it if the file size is over, say, 4 or 5 Gb. I have almost 21 Gb free memory on the iPod. Does anyone know how to remedy the problem? I haven't found anyway to allow larger file transfers even if that were the problem. Any help would be appreciated. Thanks.
Comments