This piece of software was suggested as past of the KDE Brainstorm by "Alteo Gange".
This KIO slave lists files for an installed package. This makes it easy to find configuration files for a piece of software, find where space is being used or even simply to have a look at what is installed.
Once installed visiting
package:/ will list all installed packages.
Visiting package:/amarok will list the files that are came from the Amarok package
The KIO depends on packagekit for its data so it should work with any Distro support packagekit.
If you are a (K)Ubuntu user add my PPA:
deb http://ppa.launchpad.net/david.edmundson/ppa/ubuntu jaunty main
sudo apt-get update ; sudo apt-get install packagekio