Media Jukebox registration data
File type: Various data file
An mjr file extension identifies registration data used by Media Jukebox.
This is an internal data file rather than a media file or a document intended for direct editing.
File type category:
Various data file
Date updated: October 11, 2026
Record marked as obsolete and not updated for a long time.
The mjr file extension is associated with Media Jukebox, media management software developed by J. River, Inc. for Microsoft Windows.
A mjr file stores registration data used by the software. It is part of the program's internal data and is not a playlist, audio file, or video file.
Media Jukebox is an obsolete product. The extension is listed in connection with JRiver Media Center for Microsoft Windows.
mjr files are intended for internal purposes of Media Jukebox and are not normally opened as documents.
Do not edit the file in a text editor, because changing registration data can prevent the software from recognizing it.
There is no standard conversion or export process for an mjr file. It contains software registration data, not content that can be converted to another media or document format.
Compression of this format is not possible.
Software applications that handle other tasks involving mjr files:
Microsoft Windows
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