Michael Havens said:
>
> What are thenonfree update entries in the apt-get sources.list?
> Could/should I  delete them?

They contain software that does not meet the Debian Free Software
Guidelines, but are useful.  Note this repository is not part of Debian,
but rather offerred as a service to Debian users.  There is much debate
currently if it needs to be more removed and further distanced from Debian
the project.[0]

If only want Free Software on computer, delete them.  If you don't care,
then you could leave them.

-Derek

[0] http://machard.org/debian/html/