Audio system accessory

FIG. 1 is a perspective view of an audio system as seen from the front, top and right side;

FIG. 2 is a view of an audio system as seen from the front, top and right side with some of the environmental structure removed;

FIG. 3 is a front view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The dotted line portions of the drawings represent environmental structure only and do not form part of the claimed design.