Lol, that too...but it won't have your Fruity presets and other formats it can't open.
I also haven't found a way to refresh it without rescanning the entire thing.. I may be missing something, but if I make one sample (outside of Maschine) it's easiest to drag it in through explorer or find it in the file browser. The way it separates between NI content and your own is also crappy (and unresponsive), unless you want to spend hours organising and tagging. The next problem is that if I organised my own samples in a way that works well with Maschine, it will break a lot of my older projects and stuff.