Not sure if i've got this right or not - maybe someone out there knows the score:- My set up is PC (XP Media Centre) upstairs - Wireless adaptor Downstairs - Cable Modem (10mbps) - Wireless router - 360 - Rio Karma - LG Plasma - V+ Box - Sony DAV810W Surround System Everything seems to be fine however yesterday I put all the tracks from my Karma onto my PC converting them from Ogg Vorbis to WMA so that I could stream them to the 360 to see how it sounded. On the 360 I had the Digital sound set to 5.1 but the music would only come out of the front 2 speakers- even if i changed the sound field to Pro logic or PLII. However if i chose the DCS (Digital Cinema Sound) then all 5 speakers were playing but not sure if that is how it should be. But - if I change the 360 Audio setting to Digital Stereo - ie not 5.1 then it works fine on Dolby Pro Logic and PLII - all 5 speakers - plus the Dolby Logo is lit - so is this how it should be set - Stereo for music and 5.1 for gaming? I have Optical cables from my 360 and V+ box running to a splitter - then a third cable from there to my Surround Amp if that makes sense.