Originally Posted by ashjf:
“Thanks fot that, So I'm guessing my only option is to use Optical cable from PS3 & Sky+HD to the Cinema System and to use an Optical Splitter so both can connect at once, is that correct, also can I ask, Does ProLogic still create a 5.1 experience with the above devices and blu-ray?”
What I would do first of all is connect just something like the PS3 to the surround system. Make sure it is configured to output Dolby Digital or DTS over the optical out.
Play a disk with either format sound track on it and see (or rather hear

) what happens. If the surround system is able to decode DD or DTS from the optical input then you should her the full surround effect.
If it cannot then you will hear the glorious sound of nothingness. Either that or a horrid noise as it tries to decode DD/DTS as stereo PCM!
If all it can handle is stereo then you would probably be better off just using the TV as the "switch" and feed it's output into the surround system. Avoids any issues like having pictures from the PS3 and noise from the Sky box
If the surround system does do DD or DTS via the optical in then you need a switch as mentioned above. Splitters take one output and send it to two inputs. They should not really be used to take two outputs and combine them into one input.
If you did try that then only one output can be live at a time. Which is OK if the device you don't want to watch turns off it's optical out in standby. But useless if it doesn't. A proper switch avoids that problem by only connecting one source device at a time to the input.
Dolby ProLogic is pretty good at creating a surround like effect. It helps if the source material is encoded in a ProLogic compatible format as that makes a considerable difference to the result.