Subtitled "Rock 'n Roll" and packaged in an amusingly cool circular box, Philips SBD7000 ($120) is a half-globe-shaped audio system that enables users to choose between two iPod or iPhone orientations -- tall or wide -- for listening to music. Unlike the more expensive SBD8100, which includes a motorized dock and remote control, the SBD7000 has a rear stand that is capable of propping the system up on three different angles, which you choose from…