I need to write a GUI application that will play media files on my WinCE device. I've checked the catalog files for the OS design I'm working with and found a dshow folder under src. This has a number of projects I can use, particularly filtertest which implements all the commands I would need. However, I don't understand how to interface with this code. Do I need to include some libraries in my application that will call these functions or is it though some device driver? I'm coding in MFC