Instructions
Click "Start," "All Programs" and "Windows Media Player."
Drag your desired media files into the Media Player window. These files will automatically be added to Windows Media Player&'s Library. You can double-check and make sure the files were added by clicking "Music" for audio files, "Videos" for video clips and "Pictures" for images.
Click on the "Stream" button at the top of Windows Media Player. Click "Turn on Media Streaming with HomeGroup." Click "Save Changes" in the window that appears. All the content that you added to your Media Player Library will now be accessible on your Sony PS3 via the latter device&'s main menu.