Hey Pix. SACD and DVD-A cannot be played through a digital optical (or digital coaxial) cable, only through six analog cables going from the back of a universal player to the back of an a/v receiver. Are you using your HTIB as the receiver? If so, is there six analog inputs, one for each speaker? (If there is, I'm kinda surprised -- I didn't think HTIBs could support hi-res audio.)
Good luck, Pix!
cheers,
supervij