It does require an installation of Apple’s iTunes software to work which is the only requirement. The main interface is divided into a library selector that provides access to all playlists that are currently configured in the installed iTunes version on the computer system. A click on the Clean button will initiate the scan of the songs that are listed in the library.

Users who want more control can access several configuration settings before which define the value that null fields will be replaced with and which also allow the selection and deselection of several cleaning filters.

The application is definitely a work in progress and could need some additional information to guide the user and explain what it is doing. The homepage of the software developer lists several of the features and plans for future versions. The download on that page is currently broken but will hopefully be fixed by the developer soon. Here is the direct link to the page containing the download.

The main reason to use multiple iTunes libraries would be to divide specific data into different libraries. This can be dividing losless and lossy music, libraries for specific occasions, specific music genres or types like bootlegs or live music only.

It is actually very easy to create a second iTunes library. All that needs to be done is to press the Shift key (Alt on Macs) before launching iTunes. A small popup window will be displayed asking the user to choose or create a library.

Selecting the create a library option will create a new iTunes library that acts independently of all other iTunes libraries. It should also be noted that iTunes will always open the library that has been used the last time iTunes was executed. Switching libraries would again require pressing the Shift key during launch.