@jma_sp
I saw the textures on this website:
http://wallpapercave.com/free-metal-wallpaperAll wallpapers are free of charge and there are no hidden costs involved when downloading them.
It says: Free Wallpapers ... so I don't see any problems at all, you can do with it whatever you want...
At least this is my point of view... In general I am a HardCoreOpenSourceGuy, that means if someone doesn't want to share things, then he shouldn't share things...
Nobody is forced to give something away or make it available on the internet...
That doesn't mean I don't respect licenses... it's just my very first point of view in general...
That's why I put the horned fist emoji in there!
EDIT: Unfortunately I coudn't see your icon ....