Are sound waves spread in all directions like electromagnetic waves?
Both sound and EM waves can be emitted in all directions, as from a point source, or they can be focused to a beam, as from a point source with a parabolic reflector, or anything in between these extremes. In practice, it’s harder to make a point source for sound, as ideally you need a spherical shell that can vibrate radially (expanding and contracting). But multiple loudspeakers located close together and aimed in different directions are a good approximation. Directing sound in a beam is not so difficult, and becomes easier as the wavelength decreases. You can use a parabolic reflector (Radio Shack used to sell these as listening devices), or at the simplest, a rigid flat plate that vibrates perpendicular to its plane. A loudspeaker is a small step up in complexity. The larger the plate or reflector is relative to wavelength, the tighter the beam is. So at a high audio frequency a speaker of a given size can be very directional while lower frequencies disperse over a wider angle.
