获取可用的Windows音频文件格式列表

I've got a C# program that's supposed to play audio files. I've figured out how to play any sound file for which Windows has a codec by using DirectShow, but now I want to properly fill in the file type filter box on the Open dialog. I'd like to automatically list any file format for which Windows has a codec. If some random user installs a codec for an obscure format, its associated extension(s) and file type description(s) need to show up in the list.I've got a C# program that's supposed to play a