Having been told that the info tells you if a programme is broadcasting in DD (2.0 or 5.1) or DS (surround sound that a compatible system can convert) I took a look thru the EPG yesterday.
I found that while there were a few programmes being broadcast in DS very few were broadcasting DD. Furthermore of the ones that were broadcasting DD, the only ones that were broadcasting 5.1 were Disney channels!!! Apparently Sky Movies broadcasts DD, much of which is 5.1 but I don't subscribe to it anyway.
I hooked the Sky box up via Optical to check out the 5.1 on Disney and yes, it's all there but Disney in 5.1? Not worth the investment for me!
So for me pursuing the 5.1 route is a bit of a waste of time. As for the DS concept, I don't know if it's my AVR but the conversion to surround sound IMO is not worth it, the sound is richer thru the AVR using the unconverted PCM stereo signal.