Just updated my Pi to 2016.05-1 and resolved the password less SMB share issue. In this release you can go to music>>files and select your shared file. It prompts you for a username and password and the option to remember it. Here I just entered my main Windows 7 Username and password and the share was opened and my music is playing again. I assume the same will apply to movies and videos, which I don’t use.
So as far as I am concerned, this problem is solved without having to go the password protected SMB share route…