typedef struct XMA2WAVEFORMAT {  
    BYTE Version;  
    BYTE NumStreams;  
    BYTE RESERVED;  
    BYTE LoopCount;  
    DWORD LoopBegin;  
    DWORD LoopEnd;  
    DWORD SampleRate;  
    DWORD EncodeOptions;  
    DWORD PsuedoBytesPerSec;  
    DWORD BlockSizeInBytes;  
    DWORD SamplesEncoded;  
    DWORD SamplesInSource;  
    DWORD BlockCount;  
    XMA2STREAMFORMAT Streams[1];  
} XMA2WAVEFORMAT