A multi room system typically consists of a controller unit located near the users source components (hi-fi or home theater), keypads mounted in several rooms (Zones) and discreetly mounted speakers (typically in_ceiling)
A Colour touch panel
The multi room system enables the users to listen to, or watch their favourite media streamed from the controller with full control of source and volume. In other words dad could be listening to the news in the study while mom relaxes with classical music, while the kids listen to hip-hop in the living room all at the same time.
The newer better systems make provision for ipod integration as well as media servers, which is basically a hard drive based storage solution for all the families music. Meta-data (artist, track title and album) is then displayed on each keypad while that track is playing. Changing source or volume is as easy as pressing a button on the keypad or remote control. And obviously changing a channel on the dstv from the bedroom is just as easy.
Multi Room audio / video