Sorry, but no. You'll have to copy your music manually from your old source machine. You *could* do it if your iPod is jailbroken, but since that would invalidate your warranty, and also since I don't want to get involved in encouraging you to do that, you'd have to figure it out on your own.
Re Senuti - I hadn't heard of it, so I guess it may be possible after all. 🙂