Change " [ Tools | Options | Tag Name to Auto Sort on: ] "
from its default of "title" to "tracknr" BEFORE you import any new songs.

I'm not an expert on jEmplode or anything, but it seems that tracknr would be a better default option. (I guess if the songs aren't tagged properly then title would would be what you want, but not having the files tagged makes it so much more of a pain.)

--Nathan