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.
In alcuni paesi non è permesso utilizzare questi pacchetti: verificare di avere i permessi per poterli usare.
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.