It used to display all the films I had scanned, from both my drives.
Are you really sure..? Only if you did something in the past with specific symbolic links you might have been able to do so, but normally this is not possible without doing specific tweaks as far as I am aware.
See step 6:http://mediaplayersite.com/YAMJ_Step-by-Step
Don\t ask me for more, I don't have any experience with this....