I run my cable box directly into my receiver (AVR 230) and recently switched the audio cables from RCAs to a fiberoptic cable. The receiver now recognizes the Dolby Digital signal and I have good sound. However, on most channels, I can no longer control the volume thru the cable box. I can only change the volume on the receiver. I went thru all the menus on the cable box and everything is set up properly. Since I went to the fiberoptic cable, the receiver now recognizes what kind of signal it is receiving and "sets" itself up automatically. Is this correct? Has anyone ever run into this before? Is there a way to fix it so I can control the volume thru the cable box? I have separate remotes for everything right now and I don't care for juggling 2 controllers while I'm channel hopping.