HERE'S A LITTLE HELP FOR YOU: GET A COWON IAUDIO X5L 20 GB. I HAVE THAT AND THE PSP. IT'S A MATC MADE IN HEAVEN.
Sony PSP is a beautiful device. However its basic drawbacks is expensive memory.
I was wondering is it possible to dump movies & music on a portable harddisk. Connect it to the PSP & then transfer the content from the harddisk to the memory card & back??
Can we rig it somehow?
Thus i can get a portable HD for 200$ and a MemoryStick and just transfer my music back & forth thus sving me the money of buying multiple memorysticks.
It can be slightly clumsy but can it be done?

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