Think I've sorted it, had something to do with my OneDrive, I think. Deleted every folder that had something to do with Skyrim, noticed some files couldn't be deleted due to OneDrive reasons so I wiped that. Re-installed Skyrim, sound still didn't work 100% but was better. Then I did the Link Shell Extension fix again and the player sounds and music is now fixed. Hope this help anyone else having this problem.