Instructions
Connect the SD card to the PlayStation 3 by inserting it into either the console&'s flash memory card slot if it is a 20 gigabyte or 60 gigabyte console or an external card reader, which connects to the console via one of its various USB ports.
Turn on your PlayStation 3 with the controller connected, but without a disc in the drive, so that the console&'s main menu pops up and you can go to the XMB menu, where you access your media.
Scroll down to either the photo, video or music section of the XMB, depending on what&'s on your SD card, and then select your SD card from the list of memory sources that pops up.
Press the green "Triangle" button to display all the files on the SD card. Scroll to a particular file and select it to display it using the "X" button.