Very sorry I couldn’ t help. You may wish to widen your search for assistance by going over to the Kubuntu or Ubuntu forums, also askubuntu is great for getting technical assistance like this.
It looks like you may have jumped through a lot of unnecessary hoops.
The photofilmstrip project dropped it’s dependency on mencoder due to it no longer being maintained, and thus dropped from the mplayer source code.
If you’d like a cleaner system, then just revert anything you’ve done to your system so far and remove the PPA’s you’ve used in the process. Then download and install the latest version (deb file) from photofilmstrip’s sourceforge page. https://sourceforge.net/projects/photostoryx
Update: It also looks lie Photofilmstrip is no longer maintained as of 2014.
You might want to start looking for an alternative application.
I’ve installed the current version, from dhor’s “Highly explosoive!” PPA (2.1.0-1dhor~wily). It’s the same version as the one from sourceforge project site - and it still needs mencoder. Where did you get the info that the project dropped the mencoder dependency?
I didn’t find any alternative that does the same as photofilmstrip in the same easy way or even more easier (choose music file, choose pictures, let create).