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I'm hoping a Dev would read this at some point!

Is there a chance we can get the Artbook+Soundtrack as option DLC to buy here on GOG, as it is available on STEAM?

I would buy it on steam no problem, but it requires me to buy SPG2 in order to buy the DLC and since I have the game already on gog there's no point in buying it again there just to get the extras =/