Sony MZ-N707 - Manual (Page 6)

The OpenMG technology* allows you to enjoy digital music, while maintaining the
copyrights of its holders. OpervMG Jukebox encrypts audio files in OpenMG format
and stores them on the hard disk of your computer to prevent unauthorized
distribution.
* The copyright protection technology of this software conforms to SDMI (Secure Digital Music
Initiative) specifications.
This software has some restrictions on recording and playback to protect copyrights.
You can check-in audio files only to the same computer from which they were
checked-out. They cannot be copied or checked-in to other computers.
For details, see "Features of copyright protection by OpenMG" on page 36.
You can check-in
audio files only to
the computer from
which they were
checked-out.
You cannot copy or
move audio files to
another computer.
Restrictions on audio content
High quality digital audio content is widely available through music distribution
services on the Internet. To protect the copyrights of its holders from unauthorized
distribution, some audio content is distributed with certain restrictions on recording
and playback. For example, the playback period or playback count for the data may be
limited. In such cases, checking-out of the audio contents may not be possible.
Depending on the contents, some audio data that have been able to checked-out are
subject to editing restrictions on the Net MD; e.g., audio contents cannot be erased or
track marks cannot be added or erased.
It is not possible to check in tracks other than those that were checked-out from your
computer (such as tracks recorded using a microphone).