deb http://ftp-stud.hs-esslingen.de/pub/Mirrors/packages.linuxmint.com betsy main upstream import 

deb http://ftp.tu-chemnitz.de/pub/linux/debian/debian/ jessie main contrib non-free
deb http://ftp.tu-chemnitz.de/pub/linux/debian/debian/ jessie-updates main contrib non-free
deb http://security.debian.org/ jessie/updates main contrib non-free

deb http://www.deb-multimedia.org jessie main non-free

deb http://extra.linuxmint.com betsy main