Source: Pocketmac

PocketMac is a program that has been developed for Mac users that allows you to sync your PSP with your Mac and is available for a limited introductory price of $9.95.  You can sync your contacts, music, and photos from your Mac to your PSP.

Here is what Pocketmac has to say about it’s ease of use:

“PocketMac For PSP takes care of everything for you. Install the software on your Mac in 3 minutes, hook up your PSP via USB or via the Memory Stick that comes with your PSP in a memory stick reader. Configure which options you want enabled (Contacts, Music, Photo, etc.), connect your PSP to your Mac and start the sync. That's all that's required. That's literally it.”

You can visit thier website here for addition information and ordering instructions.