Problems connecting my Sony Bravia TV to Hegel h360 integrated

Hello all, decided to try and use my h360 with our newish Sony Bravia.  A very simple start to a very simple home theater (?) setup.  Purchased a digital optical audio cable and running it from the optical out on the Sony to an optical in on the Hegel.  Pretty simple right?  Unfortunately, no sound.  Dbl checked the cable to make sure it was in securely.  I did manage to get it to work by using a mini to R/L rca cable from the headphone jack out.  Probably not the best way to go about it I'm guessing.  

I'm in the process of searching online for possible solutions as we speak.  Any thoughts very welcome!