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Fix sound (for Flash plugin) in Mozilla Firefox in Linux

Problem

Sound doesn't work (for Flash plugin) in Mozilla Firefox, but it does sometimes work for other applications.

Keywords

Sound, Flash, plugin, Mozilla, Firefox, Linux.

Solution

First, stop any application that is also using sound (such as xmms), restart Firefox, and try again. If that didn't help, edit /etc/mozilla-firefox/mozilla-firefoxrc and change
FIREFOX_DSP="auto"
to
FIREFOX_DSP="none"
or
FIREFOX_DSP="arts"
URL: http://thomer.com/howtos/sound_in_firefox.html
Copyright © 1994-2011 by Thomer M. Gil
Updated: 2004/11/10