It doesnt seem to want to load any of the cps3 roms so can't tell with that.
Getting annoyed with the crashing in the UI, so almost tempted to start again using something else instead of the windows version of burner such as SDL to start with.
As for a proper windows 8 port, i'm not sure how the sandboxing would work wrt accessing roms? Assuming that can be worked around, I reckon a port of the 360 fba next UI would be quite good.