I think I shall put the media in private folder with password for people in household
If they only want to _ play _ media that you put in the media share, just let them access the media library with a UPnP/DLNA client app, then they don’t need a password. They won’t be able to add or delete media, but they could store media in their own private share, and you could get Twonky to serve those too…
Twonky’s control interface is public to your network, too. It can be password protected, but that can cause trouble.
This FAQ might help you understand the Twonky media server:
http://community.wd.com/t5/WD-My-Cloud/FAQ-Twonky-DLNA-Media-Server-Setup-amp-Use/td-p/858810
