i did not found this feature in my latest JJOS2XL version. you have to extract the areas that you want to loop as individual samples first!
events will be saved in the Sequence, not in programs
Finally got splash screen JJOS to work 
I needed to use MS Paint on Windows XP to encode the MPC1000.bmp properly so that is displayed correctly and not as distorted glitch artefact. (Software that did not work: Aseprite, grfx2, Affinity, Mac Preview).
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Destructive chopping JJOS2XL is great because of tail. OS3 has ‘lazy chop’ instead which for me did not work that great. Non destructive chop is available on 2XL, too. So I stick to that 
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