78 Using Your Projector10 You are now logged into the 4220 or 4320 Wireless Application. Press the "Play"button in the application to starting the LAN or wireless projection.NOTE: You may use the controls to either project in full screen mode or in splitscreen mode.11 Press the "Audio Projection" button in the application to enable AudioProjection function.NOTE: Audio projector function need install extra driver, if your computer donot install driver, will pop-up need install driver message on screen. You candownload the "extra driver" from the Dell Support site at support.dell.com.12 Executing the Windows Media Player or others audio player software(example: Winamp player...) on your computer.http://www.pureglare.com.au