Serviio

Hi,
I just got a new WD TV Live after I setup serviio for the first time. It works fine so far, there are just two things I am wondering about and would like to know how others are doing this:

1) I usually put my movies in separate subfolders in a common "Movies" folder, e.g. "Movies/Fear and Loathing in Las Vegas/falilv.avi" - "Movies/The Switch/the_switch.avi" and so on, since sometimes I would like to have additional files which belong to the movie, like a subtitle file or something else, in the same folder.
My problem is, that when viewing a list of movies in the "Movies" folder, I don't get those nice preview pictures that I would get when I go into each subfolder. Is there a way to get these pictures not just for files but for folders (this would also be very nice for music, since I guess everybody uses a separate folder for each artist/album and doesn't just throw everything in one folder)?

2) Is it possible to have playlists for music files?

No to both, although something will be coming in future.

I throw all my movies in one folder, but I do make a seperate folder for each series.

I do out my home videos in a seperate folder, that way they are easier to find and do not get the error looking for metadata.