Interesting, I was not aware of the DS-HMD1, Does it do all the functions the MZ-NH3D does?
For some reason I forgot to mention that I won an auction in Japan last week for the Sony MZ-NH3D, Here is the link. Now I'm faced with a new problem which is the obsolete proprietary USB cable, With a little bit of research I found out that an adapter called BCA-NWHD3 used with later Sony media players can be used with NetMD devices that use the proprietary connection, but that too seem to be very hard to find.
I would like to reach out to members here who have a spare on unused cable or adapter and willing to sell it please PM me.