Codecs for playing non-free formats are not included in Kubuntu by default. You can get support for the extra codecs by installing the libxine-extracodecs package.
Alguns desses pacotes podem não ser permitidos em alguns países: você deve verificar se você tem permissão para usar eles antes de instalá-los.
Due to patent and copyright restrictions, some codecs are not included at all in Kubuntu. For more information on these, go to https://help.ubuntu.com/community/RestrictedFormats.