I allready tryed to uninstall Local.Fm then I reinstalled it and it still found tracks that are not in my watchfolder but in an older one that i would not like to have in my Music Library!
You can delete the Local.Fm settings/database files. On Vista: C:\Users\<username>\AppData\Local\Local.fm On XP: C:\Documents and Settings\<username>\Local Settings\Local.fm First completely exit Local.fm (you need to right click on the small status icon in your taskbar and click exit), then delete the directory.
How to reset my Library?