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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 has been asked before and already has an answer. If those answers do not fully address your question, please ask a new 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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