Many thanks for the prompt reply, however when I first used my MD recorder (on XP pro a couple of years ago) I was able to transfer music to and from the MD with no issues. Having updated to Win 7 x64 I was unable to use the orig SS software that came with MD and I was delighted to find the SS4.3 software with x64 bit drivers so I could re-aquaint myself with the MD .
The discs I currently have recorded have been created this way, but is the problem that these tracks have not been 'checked out' by SS on the current O/S ? When I first installed SS 4.3 ultimate a couple of days ago it did detect and list tracks on the MD, just would not transfer, when I tried again the next day - no track lists showing on the MD side of SS- hence the re-installs. Now although MD is available in dropdown to transfer, as soon as i select (highlight), the software locks and i just get a spinning 'egg time /halo'.
I have the unit plugged into the mains.
Thanks again for any help