Hello, Don't know if you can help or if you know of someone who can, I have a MZ-NH700 and have been using a 1GB Sony Hi:MD disc to record my childrens conversations. I tried to play it back today and it says 'CANNOT RECORD OR PLAY CREATE AUDIO FILE ? PUSH YES:ENTER NO:CANCEL' Is there anything I can do to retrieve my recordings I would be so grateful if you know of anything Yours hopefully HarrvanWeed