Instructions
Go to "Settings" on the PlayStation 3's main menu.
Open Windows Media Player on the computer. Click the "Library" tab. Select "Media Sharing." Check the box beside "Share Media."
Find the PlayStation 3 in the media list. Choose "Allow" by the PS3 and click "OK."
Go to the right category on the PlayStation 3's menu for the file you want to play. To play an audio file, choose "Music." To play a video file, choose "Video." To see images, choose "Photo."