Would anyone be willing to re-input on this thread? I would like to find a more affordable alternative to multimedia conferencing applications like Microsoft Office Live Meeting , Webex, Genesys meeting center, etc. with a self hosted solution for presenting to an audiance of around 50 people. I would like to be able to buy the application for a flat fee & run it from my own (shared) webserver if possible. Any suggestions would be appreciated. I dont need video (conf.) but would like to have chat , powerpoint presentations, Desktop share, and audio brodcast from the presenter to the audiance. I also dont want any third party software necessary for the audience computers.