There are several different ways this can be done, depending on how faint of wallet you are. Most mid-priced receivers provide the ability to control at least one additional 'zone'. As you move up the price range, more features are added, such as a third zone or independent volume control in different zones. Speakers in the different zones are connected to separate amplified outputs on one receiver. Care must be taken when running longer then normal lengths of speaker cable. Most multi-channel receivers only support two channels (stereo) in extra zones. Some receivers provide line level outputs for multiple zones, which allow you to place separate amplifiers in each zone, while sharing the same source components. This has several advantages, although it does cost more. In fact, any receiver that provides a line-level preamp output can drive a remote power amplifier and speakers elsewhere in your home. There are also a number of companies producing media servers, which can distribute music to as many rooms as you like. Your music collection is stored on the music server and separate control panels are installed in each room that needs access to the music server. These systems run in cost from the fairly modest Cambridge Audio Azur 640H to the high-end Naim n-Vi system. Other companies in the business include Yamaha, Escient, ReQuest, Russound, and Kaleidescape. Some media servers provide access to radio, DVDs, and other sources and most can provide different audio feeds to different rooms. You can hire an A/V installer to help plan and install a large system. Most audio-video stores have staff that can help you plan your system and make recommendations on which equipment to buy to obtain the features you want, if you are not planning to wire your entire house (big box stores excluded)