MULTI-ROOM AUDIO & VIDEO. A multi-room audio/video system is the convenient method of bringing the enjoyment of music and video to any room of you home, indoors or outdoors, completely at your discretion. We at Soundline are unique in our ability to design, install program and commission multi-room systems from start to finish. All our systems feature ease of use and reliable audio/video components. These can be expanded or upgraded as technologies change or as your circumstances require. A Soundline multi-room system can be virtually invisible regardless of the location you choose.