A system, comprising: a plurality of scene creation servers (119a, 119b) for creating audio scenes for a corresponding plurality of avatars in a virtual environment, a scene creation server of the plurality of scene creation servers comprising: an audio processor operable to create a weighted audio stream or an unweighted audio stream that comprises audio information from one or more objects located in a portion of a hearing range of the corresponding avatar; associating means operable to associate the weighted audio stream or the unweighted audio stream with a datum that represents a location of the portion of the hearing range in the virtual environment, wherein the weighted audio stream or the unweighted audio stream and the datum represent the audio scene for the corresponding avatar; a summarisation server configured to: - obtain dynamic state information pertaining to the virtual environment, - select a particular avatar of the plurality of avatars, - form a map of the virtual environment using the dynamic state information, the map being divided into a plurality of cells and depicting a location of the avatars in the virtual environment, the dynamic state information comprising identity and locations of each avatar in the virtual environment, each cell corresponding to a portion of the hearing range, Characterised by being configured to - determine a centre of mass for each cell around which the avatars are centered therein, the centre of mass representing an approximate location of the avatars in the virtual environment, - assign each center of mass to one of one or more clusters of avatars, the clusters being angularly distributed around the selected avatar; wherein the scene creation servers (119a, 119b) and the summarization server are configured to communicate between each other and with a client device for enabling transfer of the audio information from the client device to the scene creation servers and/or the summarisation server, and for enabling transfer of the audio streams in the clusters from the summarisation server to the scene creation servers. an audio processor operable to create a weighted audio stream or an unweighted audio stream that comprises audio information from one or more objects located in a portion of a hearing range of the corresponding avatar; associating means operable to associate the weighted audio stream or the unweighted audio stream with a datum that represents a location of the portion of the hearing range in the virtual environment, wherein the weighted audio stream or the unweighted audio stream and the datum represent the audio scene for the corresponding avatar; a summarisation server configured to: - obtain dynamic state information pertaining to the virtual environment, - select a particular avatar of the plurality of avatars, - form a map of the virtual environment using the dynamic state information, the map being divided into a plurality of cells and depicting a location of the avatars in the virtual environment, the dynamic state information comprising identity and locations of each avatar in the virtual environment, each cell corresponding to a portion of the hearing range, Characterised by being configured to - determine a centre of mass for each cell around which the avatars are centered therein, the centre of mass representing an approximate location of the avatars in the virtual environment, - assign each center of mass to one of one or more clusters of avatars, the clusters being angularly distributed around the selected avatar; wherein the scene creation servers (119a, 119b) and the summarization server are configured to communicate between each other and with a client device for enabling transfer of the audio information from the client device to the scene creation servers and/or the summarisation server, and for enabling transfer of the audio streams in the clusters from the summarisation server to the scene creation servers. - obtain dynamic state information pertaining to the virtual environment, - select a particular avatar of the plurality of avatars, - form a map of the virtual environment using the dynamic state information, the map being divided into a plurality of cells and depicting a location of the avatars in the virtual environment, the dynamic state information comprising identity and locations of each avatar in the virtual environment, each cell corresponding to a portion of the hearing range, Characterised by being configured to - determine a centre of mass for each cell around which the avatars are centered therein, the centre of mass representing an approximate location of the avatars in the virtual environment, - assign each center of mass to one of one or more clusters of avatars, the clusters being angularly distributed around the selected avatar;