A method and system is disclosed for controlling real time presentation session through a communication network using control features embedded in a predetermined presentation software such as QuickTime Player. An original media server is first located for streaming a media file therefrom to present a real time presentation session. An Internet Cache System is situated between the original media server and the presentation tool having the presentation software. During a handshake communication process among the original media server, the Internet Cache System and the presentation software, a session description information sent by the original media server for the forthcoming presentation session is modified so as to make the presentation software deem the presentation session as a non-live presentation session.