I found that to be untrue with my pod. However I do not have any DRM restricted content.
As to the Zune, my bet is that it's same story.
As to stuff on the pod you need back, I can only guess you never heard or used iRip?
Specifically, is it similar to the iPod that you have to sync to a specific iTunes on a specific computer for any music/video downloads or can the Zune move from computer to computer for loading music onto it? I have a very large digital music collection on an external hard drive and would like to be able to easily add and remove music from the player and the iPod is not user friendly in that manner. My original iTunes that I loaded my music from no longer exists and any other iTunes wants to completely wipe my iPod clean and start over again.