upfront: sorry I sparked another ruleset-discussion, I hope ya'll still having fun!
A table-like overview for the weeks ruleset sounds good, however in this weeks case I feel like samples only means only this: samples only. So you can microsample, split, use FX and so on. I feel like microsampling is kind of missing the topic (but still: not forbidden this week).
about splitting tracks with your tool of choice.
Personally I feel like seperating the samples into stems is like adding a third dimension to sampling. It doesn't break sampling imo, it can substantially change the process though.
I don't use splitting-tools often because the ones I tested produced weird artefacts (that can be cool) and low quality audio results. However I didn't think of it beeing forbidden if not explicitly mentioned in the ruleset.
(This week I used such a tool on one sample though, came out nicely

)
@5XVT: since when is Serato studio for free? last time I checked it was about 200€ :O