1. The Mint developers of LMDE have enabled the “non-free” repositories by default. To confirm this navigate to
- Menu > Administration > Software Sources.
- Select the <Third-Party Software> tab
Debian Testing Officially supported DFSG-compatible Software with Non-free Dependencies Non-DFSG-compatible
If the “non-free” repository was not present, add it to to /etc/apt/sources.list. Open the file with
gksu gedit /etc/apt/sources.list
and add these lines at the end of the file