After ages of searching a player that is able to play DVD-Content (incl. menustuff etc.) from a folder located on my harddisk (for example), I recognized: XINE CAN DO SO!
So i created this tiny little service-menu to have this feature embedded into my Konqi :)
It will create an additional submenu in the submenu "Actions", when right-clicking any folder. The two commands in this menu allow you to either just play DVD-Content or to raise another X-Session for TV-Out-Playback.
Just place the .desktop file of the archive into "~/.kde/share/apps/konqueror/servicemenus/".
Note that the 2nd feature (TV-out) of this plugin needs an X-ServerLayout named "TV" in order to work correctly.
(as described here: http://www.iofcea.de/cgi-bin/seite.pl?file=linuxtvout)
... and of course you need Xine to be installed and accessible through "xine"
Feel free to make comments... :)