Hello newbie here seeking advice.not sure where to post.i have a samsung ht-e4500 blue ray DVD cinema system and a samsung eh6030 plus a sky hd box.can you tell me correct way to set up.this is my current set up..

optical cable going from sky hd box to the DVD player.the. Hdmi cable going from sky hd to the tv then another hdmi going to the DVD..sound is ok,but in settings shows PCM or digital output however I'm unable to change to the digital output..?
I have tried speakers settings put to tv speaker but still unable to change.

Can someone tell me correct way to set all three up so have the full benefits..