Bug#560762: Ouch - I didn't notice that libav* packages were in the regular Debian repositories

[Dominique Brazziel]

I made the downgrade harder than it needed to be because when
I went to search for 'libavcodec52' I misspelled it, and
thought the only place it was available was from the multimedia
repository.  Well, live and learn.  

On a third machine I took multimedia repository out of apt sources
then successfully installed (on a third machine) 'libavcodec52',
'libavformat52' and 'libavformat49' (needed by the codec52 library) from
Debian works fine so far.  I suspect I won't be getting as many
orange ball 'updates available' from update-notifier as well.