To install the Reinhardt Icon Set (as well as any other):

1. Open the KDE Control Center
2. In either Appearance & Themes or Look 'n Feel select Icons
3. Click on Install new theme...
4. Click on the browse button
5. Select the downloaded file
6. Click OK and wait
7. Select the now installed Reinhardt Icon Set and click OK
8. Enjoy (you may need to log out and back in for some things to change)
