gaseki

I've got a question. I bought a MZ-N1 for a few pounds, but it doesn't have the cradle. AFAIK cradle is necessary to use the usb connection. Can the N10 cradle substitute the N1 cradle? I'm just asking, because in theory there should be no great difference, but I want to be sure not to waste money. And just to check if I understand it correctly. USB gives me possibility to upload more music to a single MD, and I don't have to wait for it to record realtime, yes?