Let's say I recorded some interesting sounds and would love to play them with Zyn but I don't see any sample support for oscs in any of the three synths... It would be very life saving if it's possible because I'm switching to the synth because it seems to be the only free synth that supports alternate tunings i.e. quartertones (which I'm all about at the moment).
And of course, I'm blown away by the advances of the synth and it's going to take a lot of time to get a hand of it completely!

i'd say it's not possible at osc level.

in the VST you can use its effects on some external sound, but that's about it.

It's still possible to quartertone anything by pitching dedicated midi channels with notes that require further pitching but that takes forever. I guess I'll look some synth that allows loading sampes to oscs still...