A system for presenting media data to communication clients in the course of a communication data exchange between the communication clients in a telecommunication network includes: a storage engine, configured to store a plurality of media data files; an application control server, configured to receive media data file selection signals from at least one of the communication clients in the course of the communication data exchange, and to select media data files from the storage engine based on the received media data file section signals; and a communication processing server, configured to exchange media data with the communication clients and to retrieve the selected media data files from the storage engine, for simultaneously presenting the retrieved media data files at the communication clients in the course of said communication data exchange.