File Brick

Windows 8 doesn't ship with a Windows 8 version of as file manager, but there are many options made by others. I usually use the desktop file explorer myself, but I like File Brick as well. File brick is much more than a simple file manager. You can also view videos and pictures, and listen to your MP3s right inside the app. There are many other options to explore in this handy little app as well.

Price: Free, $2.49 to unlock extra features
Windows Store Link: File Brick

Format Converter X

Many people think Windows 8 apps are just little toys. Format Converter X is much more than that. You can use it to convert video or audio files to other formats. You can also use it to extract audio from video files. As you can see by the screenshot, there's not much to using this app. It's so simple anyone can use it.

Price: Free
Windows Store Link: Format Converter X