-\newfontfamily\primaryfont[Ligatures=TeX, Numbers=OldStyle]{Linux Libertine O}
-\newfontfamily\titlefont[Scale=1.75, Ligatures=TeX]{Linux Libertine O}
+% \newfontfamily\primaryfont[Ligatures=TeX, Numbers=OldStyle]{Linux Libertine O}
+%\newfontfamily\titlefont[Scale=1.75, Ligatures=TeX]{Linux Libertine O}
+\newfontfamily\setmainfont[Ligatures=TeX, Numbers=OldStyle]{Linux Biolinum O}
+\newfontfamily\primaryfont[Ligatures=TeX, Numbers=OldStyle]{Linux Biolinum O}
+\newfontfamily\idtitlefont[Ligatures=TeX, Numbers=OldStyle]{Linux Biolinum O}
+\newfontfamily\headerfont[Ligatures=TeX, Numbers=OldStyle]{Linux Biolinum O}
+\newfontfamily\normalfont[Ligatures=TeX, Numbers=OldStyle]{Linux Biolinum O}
+\newfontfamily\titlefont[Scale=1.75, Ligatures=TeX]{Linux Biolinum O}