Mea culpa about the Pocket Dish. I was thinking PC related things.
As to the 625, there is no legal way to transfer a file to another hard drive directly.
As to DMCA, my understanding is that any attempt to circumvent copy protection of any digital file is prohibited.
That is not to say I agree with this. In fact, I think it's stupid. Just giving fair warning that things that seem simple could run one afoul of the law.
The 622, 722 is a different animal. One of the things you get for your $40 when do the HD install is the license to transfer files for your own use from a VIP internal hard drive to an External Hard drive tied ViPs licensed to YOU, as well as the license to transfer them back to VIPs tied to you. If you find a way to circumvent the $40 activation, or to allow other users VIPs to play the files, or use the files on a device that is not a VIP tied to your account (like a computer) you have violated the user agreement, if not the law.