Linear, LLC of Carlsbad, CA, an innovative firm specializing in radio frequency products, has announced its acquisition of Niles Audio Corporation, the Miami, FL company best known for its whole-house audio and video products.Linear is a worldwide supplier of residential security systems, intercoms, garage door and gate openers, long- and short-range remote controls, and medical/emergency reporting systems. The company has been engaging in an aggressive acquisitions program over the last few years, picking up Channel Plus, Elan Home Systems, OmniMount, OpenHouse, Panamax, SpeakerCraft,…