Use blue tooth speakers if it is such a big deal. You can't have your cake and eat it too Size does matter ......rather super light thin computer than a boom box.
When I am in the car I can listen to games, movies music etc with vibrant sound and great base using my Parrot system. At home via Bluetooth Phillips speakers in kitchen and bedroom. Living room is via Apple Tv through 5.1 surround system
I am using iPad 1 and iPod touch plus iPhones will have iPad 2 ASAP when shipping