i am having a terrible time setting up my new tv. i think that i have done everything right (i have read every manual) but i am not getting any sound from my speakers. i have the cable box to the tv, tv to the reciever, aux to dvd player and a hdmi cable between the tv and cable box. i am getting a picture, but no sound. when i disconnect the hdmi i can get sound from the tv only. tv: sony bravia kdl-46z4100 reciever: bose lifestyle 25 series II if anyone could help me...thank you...i dont really understand all this and im at a loss at this point}