Export OMF From SADiE to Reaper
SADiE's OMF Interchange option lets it export a session as OMF for use in other systems, including, once converted, Reaper.
SADiE's OMF export is part of its Interchange Pack. It can write embedded or externally-referenced audio, at 16- or 24-bit, so pick whichever your workflow already uses.
Once exported, the .omf file needs converting before Reaper can open it — that's what this tool does.
You can convert your OMF file for free here.
A 2-minute walkthrough of how to open an OMF file in Reaper, from start to finish.
Everything you need to know about OMF files and Reaper: how to open an OMF in Reaper, how OMF exports work (embedded vs. non-embedded), what they contain, what's missing, and what used to break before this converter existed.