One possibility, and the one I think might be what you're ultimately looking for, is a multi-room installation, for which I'd recommend using a dealer. That way you could have music in each room and control the volume for each room as well. You may not have high-end sound in each room, though you might be able to use high quality electronics and speakers, depending on the installation.
If you want omnidirectional speakers in your living room, Ohm and, if you have a bigger wallet, mbl speakers are excellent choices, but you'll also need powerful amps for the mbls. AudioKinesis speakers might also a good possibility. Shahinian speakers are also omnis, but they are more geared to classical music, and if your name is reflective of the music you primarily listen to they might not work for you. I don't know if these omnis will work for what you want, though, as they still are designed to play in one room, and their volume will change from room to room.
If you want omnidirectional speakers in your living room, Ohm and, if you have a bigger wallet, mbl speakers are excellent choices, but you'll also need powerful amps for the mbls. AudioKinesis speakers might also a good possibility. Shahinian speakers are also omnis, but they are more geared to classical music, and if your name is reflective of the music you primarily listen to they might not work for you. I don't know if these omnis will work for what you want, though, as they still are designed to play in one room, and their volume will change from room to room.