第一步安装Fedora18的源：
yum localinstall –nogpgcheck http://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-stable.noarch.rpm http://download1.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-stable.noarch.rpm
然后安装音频解码器：
yum install gstreamer-plugins-good gstreamer-plugins-badgstreamer-plugins-ugly libtunepimp-extras-freeworldxine-lib-extras-freeworld
安装视频解码器：
yum install ffmpeg ffmpeg-libs gstreamer-ffmpeg libmatroskaxvidcore
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转播
