Is this possible - I'm using a Beocenter 9000 in an upstairs room and would like to know if I could connect an additional pair of speakers to the 9000, place them in a downstairs room but control the primary functions of the 9000 from downstairs?

For example, the 9000 is turned on upstairs and i would like to listen to music in my downstairs room and also change or operate say the CD player - can i change tracks from downstairs, or adjust the volume?

Is there a link of somesort?

Alternatively could this be achieved if I use my other system which is a Beosystem 5500?