Falcon does not import foreign sampler formats besides SFZ. Just drag & drop an sfz-file into the program slot. Not all data embedded in an sfz (like e.g. round robin chains) always translate though.
All articles related to the sampling oscillator in Falcon.
FAQ: Are there any fade handles in the sample editor area or you have to do the destructive fade in and out? A: Yes, fade handles appear once you’ve set the loop to crossfade (does not work in granular mode), the segment left of the loop start point is the portion available for crossfade looping. […]