Dr. Octo Rex Loop Player : About REX file formats

About REX file formats
Dr. Octo Rex can read REX files in the following formats:
This is the file format generated by previous versions of ReCycle (Mac platform).
This is the file format generated by previous versions of ReCycle (PC platform).
This is the ReCycle file format for both Mac and PC platforms generated internally in Reason Essentials (see “Bounce Clip to REX Loop”) or by ReCycle version 2.0. One of the differences between the original REX format and REX2, is that the REX2 format supports stereo files.
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Unlike the Dr. Rex device, Dr. Octo Rex can also load and save the device panel settings in a special Patch format (.drex). The REX file(s) and the Dr. Octo Rex panel settings are also saved in the Song file just like every other patch in the song.

Dr. Octo Rex Loop Player : About REX file formats