Emu XL-7 & MP-7 User's Group

I don't remember that post, otherwise I'd look for it.� Balma has a presence at gearslutz, with a focus on sound design ideas using the P2K synth engine.  You might look there and even drop him a post if you can't find the one you are looking for.

https://www.gearslutz.com/board/electronic-music-instruments-electronic-music-production/942396-e-mu-command-station-xl-7-mp-7-pk-7-proteus-2500-tutorials.html

Hmmm. I do recall either doing or reading something about reading past sample boundaries; not sure if that was in a manual or in the post you are recalling.

Steve