An OMG file is a compressed audio file using Sony's proprietary OpenMG technology.
The audio is based on Sony's other proprietary ATRAC3 format but instead of being open, includes DRM that stops files from unauthorized copying.
It is currently supported by SonicStage.
Related glossary terms
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Winamp Full (Freeware)
Nullsoft Winamp is a fast, flexible, high-fidelity media player for Windows.