Need feature to wipe library

[MVideo]

I only want bsplayer to index the files from a specific directory on my sdcard.

When it started up it automatically added everything from the local storage and external card, and although I removed the other directories and added just the one I want the media library to be built from, it won't "forget" the other files.

The preference setting to "clean database" looks like it's just for removing files that are not valid any more, but I want the database to only contain entries from directories I specified in "media folders"

Is there any way to do this? Otherwise please add it as a feature.