Thanks for your help guys, looks like it's back to real time then unless I can find a local MD duplicating service. It's not just the time it takes to copy in real time, but then having to edit and re-title the disc and tracks. Thanks Sony.
I have 50 or so MiniDiscs which we use for dance classes. I bought an MZ-NH1 hoping that the new fast USB upload would allow me to back up my MiniDiscs quickly and produce new copies as some are getting old. SonicStage won't upload Discs not recorded on my MZ-NH1. Any ideas other than real-time line in/out recording?