All my music and my photos are on a NAS. Those folders are shared via Samba.
It seems it's impossible to access samba shares when defining the library location for my music or photos.
I tried "enter a location" , then typed "smb://myNasName" or "smb://myNasIP" but nothing happens when I click "open". Obvisouly I can access and browse those shares using the file manager using the same path.
Anyway I just discovered Elementary OS, and it looks really great !