Any chance Fechtbuch DLC for KCD:RCE buyer will be added to my Steam account? No Blue-Ray player owned

As stated in the topic head, as buyer of the KCD:Royal Collectors Edition, I have the blue-ray disc of Fechtbuch, but I do not own a blue-ray player.

Is there a way to watch the Fechtbuch DLC from steam without buying it, since I have the disc?
(All DLC are connected to my steam account, but the Fechtbuch is not. I tried entering the numbers on the disc in steam with activate a product, this did not work.)