1. A network AV system comprising a plurality of servers and first and second clients that can be connected to at least one of said plurality of servers, each said server comprising a storage device for storing a plurality of contents, at least one of said servers comprising: a global list storage device for storing a global list of a plurality of contents stored by said plurality of servers; and a global list transmitter transmitting the global list to said first client, said first client comprising a reproducing instructor transmitting a reproducing instruction for a content selected in the transmitted global list to said second client through said server, said second client comprising a content requester responsive to said reproducing instruction and requesting said server to provide the selected content, at least one of said servers further comprising a content returner responsive to the request from said second client and returning the selected content to said second client, and said second client further comprising a reproducer reproducing the content returned from said server.