[ubuntu] Forcing audio to mono

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http://ubuntuforums.org – I've googled a bit for this but the fact that the word mono(single channel audio) brings up results for mono (the package) is making it a bit difficult. My laptop has one broken speaker (left) so I want to make ubuntu give me stereo channels combined to mono so I get the same output on left and right. Any ideas if this is possible and how to do it? (Hardware)