SPDIF Input to analog output

Is it possible with OSMC on Raspberry Pi2 to output to analog jack, audio received over SPDIF digital socket ?
This way i could connect my TV to sound system, that doesnt have digital interface.
TV -----optical---->SPDIF/in on USB connected to RBP2----->Sound system
I have 7.1 external soundcard named Mint (made in China) that surprised me to work with raspberry out of the box, but on system can not see any settings related to digital input.

I think there are no settings because there is no provision for such inputs.
A forum search should get you the posts where comparable questions have been asked