Moxivo Multi Room Audio Distribution System - Whole House Multi Zone Audio via Phone Landline Includes six adapter cables (2 x phone jack/3.5mm Male, 2 x phone jack/3.5mm Female, 2 x phone jack/RCA Component Audio) Seamlessly transmit quality stereo audio anywhere in your home over your unused phone line. Play music from any audio source on up to five A/V receivers, stereo systems, or self-powered speakers at the same time. Simple setup involves plugging an audio source and any number of receivers into your unused phone lines with the six provided cables. Play music from a laptop or computer and control your music from anywhere with a mobile device and free apps like Retune for iTunes or Remote for Spotify. The phone line can not be shared with an active telephone, fax machine, or phone-line based internet (i.e.DSL).