SvenArne
I don't think any of the big Drumplers have this option except NI Battery.
BFD 2 let you add your own samples. I assume that capability has been retained in BFD3.
Of course its not necessarly that straight forward if you want to do it well, in addition to obvious stuff like getting round robins and velocity layers right, what about the bleeds, the overhead and room mic's etc. If you are not getting the ambiance and the bleeds, IMHO, you might just as well add your sample to another player like the free TX16Wx, Battery or Kontakt.