Unable to use personal media

Hello
I’m very new to Kodi by the way, just to warn you first Wink
So, I’ve installed PseudoTV succesfully and now I’m stuck. I want to use my personal media library as database for PseudoTV, but I just can’T
I go in this path : hover PseudoTV > Press C > Setting > General > Open Channel Configuration > 1 > Select Directory > Enter Directory
then, I should get a browser, but instead of having it at the root of my computer, I just get 2 folder, one from my external HDD, the other is my DVD drive…
What have I done wrong?
Can somebody help me please?
thanks