I also installed it and I ran into a similar problem with the Database. I have 4 drives in my machine and the one that has all the samples is my H: drive. Samplesort only shows my D: drive (where I keep all my zipped files and some older files).
I didn't read the manual yet, and just tried to navigate through the software.....so, I can't really say I've given it a proper "go at it". I'll post back when I get more time to spend on it.