This is a pretty cool technique, I’m looking forward to trying it. Looking at the old posts, it seems like Ableton is a clumsy way to prepare the samples, though. It should be much simpler in reaper.
-Collect your 64 breaks into a single folder
-From the media explorer, load them into a new project, on separate tracks (just select them all in the media explorer and drag to the timeline, and choose the option to load each file on its own track). The track namess will automatically be set to the filenames.
-set them all to the same length using your preferred timestretch settings (make sure snap to grid is on!)
-drop markers every 15th note, and then create regions between the markers, making sure the region numbers match the slice number (to make it easier to generate filenames)
-render stems of all 64 tracks into an empty folder, with the bounds set to “project regions” and the filenames set to be “region number + track name” using wildcards. you will now have 1024 files.
-start a new project. In the media explorer select all files whose names start with “1” and drag them to the timeline. At the prompt, choose the option to load them into a single track. You will now have a track with the first slice of all 64 breaks in sequential order. Repeat this for all files starting with “2” and so on until you have 16 tracks with 64 clips on each.
-Select all the tracks and render stems into a new folder again, but this time set bounds to “entire project” and use the “track number” wildcard in the filename field (followed by whatever name you want) to make sure that each stem starts with a number corresponding to which step in your 16 step pattern are in it.
You should now have 16 files, each containing 64 slices with filenames that begin with a number corresponding to the step from the original 16 step breaks that file contains.
It probably sounds a little complicated (and I’m just doing it off the top of my head s I may have left something out) but really it’s not much work at all and it should take 5 or 6 minutes to prepare all 64 breaks this way once you’ve actually chosen them and trimmed them.