Thanks for your help guys. After my original message I actually ended up exploring SFZ which has worked quite well for me (I was already familiar with XML so once I got my head around the op codes all was well).
And then I did recently splurge for Kontakt, which I managed to get for cross-grade and during the summer sale for about 25% of the price. There are a number of free libraries that can get you the cross-grade discount so I would really recommend that.
I’ve since sampled some wine bottles and my acoustic guitar, inspired by the Make Music Day tutorials. Not quite Pianobook quality yet, but I’ll keep chipping away!
But I’m excited for this Christian’s promise of soon-to-be universality, that would be amazing!