Apple has just released iTunes 11.01, and this update adds duplicate track finding. This feature allows users to quickly find duplicate songs within their iTunes library. Users can then easily delete the duplicates within iTunes. Apple removed this feature with the initial release of iTunes 11, but has added it back just weeks after its release. iTunes 11.01 also adds a few other small improvements and bug fixes, such as fixing issues with the AirPlay button among others. You can update to iTunes 11.01 via Software Update or you can manually download the update on Apple’s website.