yep, it's at step 2 i get the error. i'll arrive at the SUR.SETTING option and press + or >, and the "NOT IN USE" error will flash.
when i use the blu ray player for sound, i get full surround, everything works perfectly.
when i use my RCA "audio" input, or the digital optical "TV" input, only the left, right and subwoofer channels work. the center and rear channels do not work.
i use audio RCA for my mp3 player / laptop.
i use the digital optical for my tv / xbox. the setup is as follows: xbox is connected to my sony HDTV via HDMI -- sony HDTV connects audio to the bdv-e770w unit via digital optical cable.