QNAP Stephane has released a new version of Twonky - 8.4

Twonky 7.3 is a third party application that provides additional functionality to OS X system and enjoys a popularity among Mac users. However, instead of installing it by dragging its icon to the Application folder, uninstalling Twonky 7.3 may need you to do more than a simple drag-and-drop to the Trash. Twonky Server 8.4 Skip to end of metadataGo to start of metadata New Features By right clicking on a container in the Twonky Server WebUI one gets the option to add this container to 'Favorites'. Favorites are listed as new node for browsing Twonky Server. The Favorites node is only listed if not empty. There are no subtitles when i stream movies over DLNA, with the current version on the WD firmware which is 7.2.9-67.5.0-77. However, i installed trial version of the newest Twonky Server on my laptop just to see if the problem will go away, and voila, the problem goes away with the newest version of Twonky Server (8+ version).

As you should know QNAP has now dropped full support of Twonky and is not free anymore
This now requires a licence key, which is pretty cheap for the application and now allows 3 installations of the keyfile on to different devices.
The registration key is now added to an online account (part of SmartLynx) which you have to setup a username/password (which must NOT contain special characters)
Changelog

Twonky Server Mac Os

Available to install from here: https://www.forum-nas.fr/viewtopic.php?f=21&t=5276