Search in your /etc/apt/sources.list this line: DEB HTTP://BR.ARCHIVE.UBUNTU.COM/UBUNTU/ DAPPER UNIVERSE uncoment, if is not, and modify to: DEB HTTP://BR.ARCHIVE.UBUNTU.COM/UBUNTU/ DAPPER UNIVERSE MULTIVERSE (include "multiverse") and run: APT-GET UPDATE *apt-get install libxine-extracodecs* -- Rhaurison Bergamin