Howto use KDE4's device notifier to play a DVD in SMplayer

Just finally figured this one out! It's possible to add an entry to KDE4's device notifier, so you can just click & play a DVD in SMplayer. Awesome!

You need a very recent SMplayer and Mplayer, latter one compiled with dvdnav support.

1. In SMplayer's preferences, go to mouse & keyboard -> mouse, and for left click select "Activate option in DVD menus".
2. Create a file called smplayer-playdvd-predicate.desktop
   in $KDEDIR/share/apps/solid/actions, here that means /usr/kde/svn/share/apps/solid/actions/smplayer-playdvd-predicate.desktop, with following in it:

[Desktop Entry]
X-KDE-Solid-Predicate=[ StorageVolume.ignored == false AND OpticalDisc.availableContent == 'Data|VideoDvd' ]
Type=Service
Actions=open;

[Desktop Action open]
Name=Play DVD with SMplayer
Exec=smplayer dvdnav:////%d
Icon=smplayer

Now restart KDE, insert a DVD in your drive, or load DVD ISO image in cdemu, wait for the device notifier to pop up, and select.

That's it!