If after you upgrade your Zune software on your Windows PC, you find that the music in your collection is now associated with incorrect album titles, then using the Zune Media Collection Reset Tool may help you.
A previously correctly categorized collection may now display incorrectly! This issue could occur while upgrading your Zune software from a older version to a newer version. In such a scenario, your music files may become associated with incorrect album art or even with other metadata information.
To fix this issue, download Zune Media Collection Reset Tool from Microsoft.
Close Zune and run the tool. After you have followed the wizard, reopen Zune. The Zune software will now add your collection back into your library and this could even take a while!
This tool will reset the current state of your Zune media library. It will not affect any non-Zune-related files or settings on your system, but it could even delete any and all ZuneAlbumArt.jpg files it finds in your library! It is designed to correct the corruption of your Zune software’s database files. In short it resets and cleans up and erases the Zune database.