XD Video Player is a free, powerful video player that lets you watch all your favorite media files on your Android device. It supports a wide variety of video formats and supports many different audio formats, too. With the help of the handy GUI, you can easily search for the media files you want to play. And, you don't have to worry about downloading any third-party software to be able to play your videos.

It's completely free, too, which means you can use it as much as you want. The only thing you have to do is to install it on your device.