I found one or two topics that mentioned this, but they didn’t seem ultimately all that helpful.
Basically, is it possible to drag a .wav (or whatever) file from Renoise’s internal disk browser to a VST that loads samples, e.g. Shortcircuit, Kontakt, Battery? I can do this when I load the very same VSTs in REAPER, so I’m sure the plugins are capable of it; and indeed, I can drag and drop from Windows explorer to plugins running in Renoise. I just can’t seem to drag files onto a VST instrument’s interface from Renoise’s browser. (Presumably they’d need to be file “locations” or references rather than actually loading the sample data, since the VST would handle the latter; but, anyway.)