Here's some additional name sets I've been working on, from the former Yugoslavia:
43,Slovenian,0,0,10,990,0,
44,Macedonian,0,0,20,980,0,
45,Bosnian,0,0,50,950,0,
I would recommend using the Slovenian set with about 20% Serbian, the Bosnian set with about 40% Serbian, and the Macedonian set with about 10% Albanian (set coming soon).
names_Slovenia.txt
first_names_Slovenia.txt
names_Macedonia.txt
first_names_Macedonia.txt
Continued..