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Possible Duplicate:
How do I deal with “unauthenticated sources” errors in the Software Center?

i am using ubuntu 12.04 version. i am trying to install VLC media player through software centre. But I cant. Pop up message shows that "The action would require the installation of packages from not authenticated sources."

please guide me how to do install it? thanks in advance!

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marked as duplicate by hexafraction, stephenmyall, belacqua, fossfreedom Nov 2 '12 at 22:19

This question was marked as an exact duplicate of an existing question.

simplest solution is that you download the installation package from VLC offical site

And install the downloaded package by double-click.

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