First, thanks a lot for the help.
Second, english is not my first language so I may be a tad slow to get stuff here. Sorry for that.
With the Oppo, I have a few icons to choose from (music, photo, movie, network, etc). I choose MyNetwork and then It show me MyPC (which is, well, my pc!). Then within "MyPC" are folders; music, video, pictures, selections. Within each folders, other folders for; all music, genre, a-z, etc. Problem here is there is no content on any folders except the picture folders. Nothing in the video folder, nothing in the music folder. Which is weird to me since my library has lots of videos and music. And yet, the pictures that are showing in the pictures folder are part of the same library as the music and videos. So the Oppo sees the pictures only but nothing else.
Just to be clear here, on MC, under file > Library, I have "Main Library" where ALL my music (only) is, configured to play on my USB DAC and everything is working great there since day 1 (more than a year).
Again, File > Library > Main Library. Now, under Main Library, I see MyVistaPc which I checked to built another library with music, videos, pictures, etc. This is now my second library I am trying to use to work with the Oppo DNLA wise. And that's where nothing is working. On the MC, in this library, I see all my music, videos, pictures, etc. Therefore I thought the Oppo should see It too since those are the same folders I see when I clic on MyNetwork on the Oppo.
Alas, no content on any folders, except, again, the pictures. So the structure on the Oppo side is there, but there is (almost) no content in the folders. Why is that?
Again, sorry for the language barrier and If my translation is more confusing than helpful here.