Wireless Data Projector I Want To Transmit From My Notebook Wireless To My Sound System, How Do I Do That?

I want to transmit from my notebook wireless to my sound system, how do I do that? - wireless data projector

I'm using an Acer Aspire 3000 with a projector in a public hall, what sound system is the way to the back of the room. So I wanted a wireless solution for easy wireless configuration and stumble.