I have a digital cable box and a DVD player, they both have a coaxial digital audio out and neither has optical outs. Unfortunately my Sony receiver has only one coaxial digital audio input and several optical inputs.

Can I use a splitter ("Y" adapter) at the receiver in order to connect both the cable box and the DVD player? If it is possible to use a "Y" adapter do I use a mono or a stereo adapter?

I look forward to your suggestions!