About the lights, read the manual carefully. One thing you can do is turn on just the right side marker lights, or just the left. The idea is to make the car visible when parked at the curb.

The speakers behind the seats are subwoofers, not full range speakers. As such, sub woofers are omni directional and without the need for fade front to back/side to side. If you COULD do that, all you would hear would be extreme low range, and in some cases not hear it so much as feel it.