Just a small note on the behavior of FBA 'Rom Paths' :
It appears to me (but I might be wildly mistaken, please correct me when wrong) that any selected 'Rom Path' only searches through the *exact* directory that was chosen, but not it's subdirectories. So for example, if you have a directory structure that looks something like this (hypothetical) :
'C:\FBA\Roms\More-Roms\Some-More-Roms'
And you point a 'Rom Path' to 'C:\FBA\Roms\' it *will* look into the exact 'C:\FBA\Roms\' location, but *not* in the subdirectories '\More-Roms' and '\Some-More-Roms'.
Not really a big thing once you know that, but I found it to be counter-intuitive, and it took me some time before I figured out what was going on.
So if I'm wrong, please feel free to correct me, and if I'm right please consider putting the addition of looking in subdirectories of what's specified in 'Rom Path' on (the bottom of) the wish list.