It comes down to how fussy you want to be with the end setup and whether you rethink or compromise. In that space you are always going to see the back of the TV. An audio system might suit better. If you must have the TV their then you'll have to start getting a bit more creative which could mean getting some interior designers in or rethinking it all yourself again.
You could put a partition up or maybe put a picture on the back of the TV such as an oil on canvas. Or, as a previous poster mentioned, you could use a table. The Bang and Olufsen cabinet made for that model TV springs to mind, or a lower one. However, there is no escaping seeing the back of it. Another option is to wall mount the TV and use B&O wireless technology for the sound.
Looking at that space I would be inclined to put the BeoSound 2500 in the middle, simply resting on the tiles without a stand. Trade in the existing speakers and get some BeoLab 4000s which you put vertically mounted either side. Alternatively you could trade in the BeoSound 2500 as well as the speakers and put a BeoSound 9000 their. The BeoLab 4000s could then be flipped to a horizontal position to match or you could use BeoLab 3s instead. Modern looking, works perfectly in the space, easy cabling solution and a good central location by the look of it, so easy to point remote and operate from anywhere around that space. Find a new place for the TV and wall mount.
Simon.