Yes — and that shrinking REX support is exactly the story I keep hearing. Honestly, I didn't even know what REX files were until a producer with a big collection like yours requested it, so I sent a mail to Reason support asking how to implement it. My original idea was to just timestretch loops — but once I had REX working, I discovered sliced loops sound far better with tempo changes than timestretched ones: clearer, more attack, more natural. No stretching artifacts, the slices just play at the new tempo. That convinced me to build it out properly.Milkman wrote: Mon Jul 06, 2026 6:56 pm Interesting. This thing can read rex files eh? Ive got a huuuuge library of them, and every few years less and less of my software can read them it seems. Ive been following the development of this plugin and it sounds pretty mature at this point. I may give it a try.
REX is also the reason BeatForge has its own slicer now, so you can slice any loop — though I'll be honest, ReCycle and making your own REX files still does a better job. BeatForge reads those natively (implemented with the official REX SDK — the people at Reason Studios were very helpful with the integration, which was nice of them).
What you can do with your library:
Play the slices from the built-in sequencer
Parameter locks work on both the steps and the slices themselves — and slice locks stay active when you trigger via MIDI
Drag the slice MIDI straight into your DAW and drive the loop from your own piano roll, with all your slice tweaks intact
Route any slice (or linked groups of slices) to separate plugin outputs — remix an old loop with different processing per hit
Random slice mode if you want a loop to surprise you again
So a huge old REX library is pretty much the ideal use case. If you give it a try, I'd genuinely like to hear how it handles your collection.
P.S. the stale random sample/slice bug is fixed.
