Welcome to the tenth article on beginning game development. In the last article we manipulated sounds by adding sound effects. Together with the use of 3D Buffers to make the sounds positionaly accurate we now have a fully featured sound system in the game. But, while we’re are able to play and manipulate short sounds and sound effects we cannot play longer WMA or MP3 files with the DirectSound namespace. To accomplish that we need to turn to the AudioVideoPlayback namespace.