DavidAllan Posted September 7, 2008 Report Share Posted September 7, 2008 Can anyone explain the Atrac file structure on HI-MD. Here in the UK Curry's Digital are selling the NAS-50HDE at discount price. I got a brand new one yesterday for £279. It quite an amazing bit of kit and supports Atrac, Atracplus and mp3. I connected my RH1 to the usb port and it was immediately recoginsed as a USB device. Using a blank HI-MD disk it imported both atracplus and mp3 files without a problem and played them back ok on the NAS and windows media player (which i couldn't get to work before with the rh1). Obviously it is treating the RH1 as just a bit of storage. I then put in a HI-MD disk recorded from SS4.3 and the NAS cant do anything with the files, The manual says they must have a .oma extension to work. When I look at a md disk in window explorer the files all have a .HMA extension none of them have .oma. To double check I borrowed a A808 flash player and all the files had .oma extension and they played ok on the NAS. Is SS4.3 changing the files for protection? Anyway just thought I'd share my (amateurish) experience.The RH1 looks good on top of the unit acting as a little mp3 deck.Allan Quote Link to comment Share on other sites More sharing options...
DavidAllan Posted September 7, 2008 Author Report Share Posted September 7, 2008 It's like plugging a Hi-MD device with USB to a PC -or a Mac, with the few Mac compatible units-, you can use it as a mass storage device, put any file onto Hi-MD formatted standard discs or 1Gb Hi-MD discs, even audio files, but those will only ever be playable on any Hi-MD device if they are transferred via SonicStage on a PC or Hi-MD Transfer on a Mac.I'm afraid no MD device whatsoever will interact with your NAS-50HD mini-system. At least not via USB, and not faster than realtime.Thanks for the info I suspected as much. Sony certainly make their units incompatible with each other.cheers Quote Link to comment Share on other sites More sharing options...
A440 Posted September 7, 2008 Report Share Posted September 7, 2008 The idiotic encryption Sony built into minidiscs encodes everything on the disc into one giant .hma file that must then be decrypted by SonicStage. This not only makes the other units that can play Sony's oddball proprietary .oma incompatible. It also means that one tiny bit of corruption on the disc ruins the entire .hma file so that you lose everything on the disc instead of having one bad track. .HMA and the whole deranged idea that your own recordings would be encrypted is exactly what killed minidisc. If you're wondering what HMA stands for, it means:Hara-kiri Madness Always Quote Link to comment Share on other sites More sharing options...
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