OrangeCD setup does not attempt to scan your media files. It would not do it unless you explicitly click "Scan media files" in menu. However, setup installs a sample database in the My Music folder. It seems that My Music folder on your computer is mapped to network share. We don't support this scenario, so I would recommend temporarily enabling access to that share. I guarantee that the only change setup program will do in the music folder is creation of "Sample database.dab" file which you can manually delete when setup is complete.

Andrei