I Bought a Corrupt iTunes File--How Do I Fix It?

If you download a lot of files on iTunes, particularly videos, eventually you're bound to get a corrupt file that can't finish downloading. As a fix, iTunes might prompt you to "Check for Available Downloads" under the Store menu, but chances are this will only redownload the corrupt file, sticking you with something you paid for that doesn't play. The solution? Easy. On a Mac, go to Users\User\Music\iTunes\iTunes Music\Downloads. In the Downloads folder, you'll find the TMP folder for the corrupt file—delete it. Then click on Check for Available Downloads: iTunes will download a fresh, uncorrupted file, and you'll get your money's worth. On a PC, it's basically the same drill. For Windows XP, the folder path is: Documents and Settings\User\My Documents\My Music\iTunes\iTunes Music\Downloads. In Vista, it's Users\User\Music\iTunes\iTunes Music\Downloads.

via PC Mag