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.
Alcuni di questi pacchetti non sono permessi in alcuni paesi: si dovrebbe verificare se si ha il permesso di usarli prima di installarli.
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.