
OpenMG is a SDMI-compliant digital rights management system by Sony. It is designed for audio files in ATRAC3 format. The compliant software, e.g. Sony SonicStage, is usually capable of transcoding MP3 and wav files to OpenMG/ATRAC3. The file extensions OpenMG-encrypted files use are .omg and .oma. There has already been at least one reported case...
Found on
http://en.wikipedia.org/wiki/OpenMG

Copyright protection technology including Digital Rights Management which consists of three key functions: allowing music download through multiple electronic music distribution platforms, enabling to playback music files and CD ripping on PCs (OpenMG Jukebox), and transferring contents securely from PCs to portable devices
Found on
http://www.encyclo.co.uk/visitor-contributions.php

Copyright protection technology including Digital Rights Management that allows three key functions: Music download through multiple electronic music distribution platforms The ability to play back music files and rip CD files to PC (OpenMG Jukebox) Transfer of contents securely from PCs to portable devices
Found on
http://www.sony.co.uk/glossary/ShowGlossary.action?site=odw_en_GB§ionty
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