others content which typically comprises things like music songs movies tv programs pictures and the likes is received through a residential gateway or set top box 101 the source could be a connection to a broadband cable network an internet connection a satellite downlink and so on the content can then be transferred over the network 110 to a sink for rendering a sink can be for instance the television display 102 the portable display device 103 the mobile phone 104 and or the audio playback device 105 the exact way in which a content item is rendered depends on the type of device and the type of content for instance in a radio receiver rendering comprises generating audio signals and feeding them to loudspeakers for a television receiver rendering generally comprises generating audio and video signals and feeding those to a display screen and loudspeakers for other types of content a similar appropriate action must be taken rendering may also include operations such as decrypting or descrambling a received signal synchronizing audio and video signals and so on the set top box 101 or any other device in the system 100 may comprise a storage medium s 1 such as a suitably large hard disk allowing the recording and later playback of received content the storage s 1 could be a personal digital recorder pdr of some kind for example a dvd rw recorder to which the set top box 101 is connected content can also be provided to the system 100 stored on a carrier 120 such as a compact disc cd or digital versatile disc dvd the portable display device 103 and the mobile phone 104 are connected wirelessly to the network 110 using.