Instructions
Open up your Internet browser. Download the PS3 Media Server installer file from a reliable website such as MacUpdate, Kioskea or AfterDawn.
Open up the downloaded file and install the PS3 Media Server onto your Mac. Turn on your PlayStation 3.
Launch the Media Server program on your Mac. Wait while the program locates the PlayStation 3 on your network.
Select the "Navigate/Share settings" tab and then choose "+" to add a new device.
Select a folder containing the media files you would like to share with your PlayStation 3 and click "Open."
Select the folder on your PlayStation 3 dashboard that contains the type of media you wish to share from your Mac. You will now see the files shared between your Mac and PS3.