OK...I have the HD10-250 DVR hooked up to my bose lifestyle 35 via optical connection. My issue is that some of my HD audio channels that I know are broadcasting in 5.1 are not coming over in 5.1...for instance last nights game on ABCHD was DD 5.1 and yet I was not getting anything out of my rear channels, however I decided to hook up with regular red/white connections and the rears came in??? I prefer to have the optical because although the rears came in I did notice the sound volume dropped significantly. It seems all my other DD 5.1 audio channels were working fine via optical...for example hdnet, hbohd, shohd....etc these all worked ok, but that damn local hd channel via the optical during the FSU/Penn State game would not work. Any thoughts on why this is happening? Is this a Bose issue? A Tivo issue or local channel issue?????