It will work regardless of what license you have, as its essentialy the original textures and sounds replaced with wintery ones.
I for one would copy your whole LFS install and then install the mod on the copy, so then you still have your original LFS for when winter is over.
I also added the current Z patch car textures so the mod will now work straight out of the box, just unzip to your LFS folder and click yes to all overwrites, then run LFS and enjoy winter!