I don't own a PSP, so I can't really test that out myself, but here's what I'm after.

Specifically, I'd like to have 2 or 3 handhelds (PSP's?) all able to read from a single fileserver simultaneously.

If PSP's aren't the way to go, what would you recommend as a cost conscious solution? I'd like to put a fileserver w/a single 500G drive in a vehicle, and allow the kids to watch their movies wirelessly.

I'm tired of burning DVD's.