The little usb connection broke inside, so I dismantled it. No joy with ubuntu, still comes up unallocated. But on the up side ubuntu said one of my drives is missaligned which will give me something to do this afternoon whilst playing starwars rebellion. I'll email creative & keep my fingers crossed.
NM I found the answer, they use their own file system on the mp3 players ( http://www.anandtech.com/show/803/5
) guess all my tunes have gone where all the little toasters go when they die. Thanks for the suggestion