There are dozens of file formats for word processing documents, database files, graphics, spreadsheets and so on. If a file was created in one application and you want to use it in another, you can ...

Scenario: You’ve obtained an audio or video file that’s either in a format unsupported by the device you intend to play it on—an iOS device, traditional iPod, or your Mac, for example—or in a form ...

Kindle devices appeal to many people. When everything works, they're great. But Amazon is becoming more and more finicky, both in terms of supported formats and the freedom to manage your own books.