@herb_fargus I already did install it, made the whole thread from my Raspberry. Also I don't know why but the custom install i did for MPV and its codecs only works on tops of full raspbian, not raspbian lite. At least thats what the guy from the thread said.

Thank you @mitu for the quick and, arguably, more importantly, accurate information. Too many times I have been given a solution that just leads me down a rabbit hole that never ends but this was a one-stop solution.!

Nevermind. It looks like I'm on Stretch, not Jessie. I guess I'll have to re-install Raspbian yet again...

Ah thank you very much!