I am afraid that the FileExplorer does not provide built-in Italian localization files. FileExplorer uses the .resx files of the RadEditor's dialogs which are available in three provided by us languages for all - English, German and French.
There are several localization translations in different languages prepared by our client, which can be found in our online resources. I would suggest you to review the localizations uploaded in this code library section, and see whether there is a translation that will be useful for you.
Additionally, if you decide to translate the localization of a control into a missing language (or update an existing one for the latest version of the controls), please, do not hesitate to submit your localization files and we will reward your efforts with Telerik Points.
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