Loudspeaker companies have developed numerous in-wall and in-ceiling speakers to blend audio with various styles of home decor. For homeowners looking to add speakers to their shower stalls, Polk Audio and Kohler have made it an option to blend there as well. Kohler has released an in-shower loudspeaker developed in conjunction with Polk called the SoundTile, designed to match the shape, profile and finish of Kohler’s WaterTile bodysprays and showerheads, the company says.