[lubuntu] Lubuntu 12.04 : No sound after installing VLC + codecs

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http://ubuntuforums.org – I'm running lubuntu (12.04) with Fluxbox window manager. Sound was working fine and and could view and hear all streaming content on Youtube and the news media sites. Decided to install VLC and its associated codecs so followed steps 10,12 and 13 on this page : http://www.unixmen.com/201204-top-th...ling-ubuntu-2/ After re-booting I found that there was no sound. On previous installations I had got over the problem by adding myself to the associated audio group. This time however, even though I've added myself to audio, pulse and pulse-access groups there is still no sound.I've checked (Hardware)