typedef struct tagMCI_SEQ_SET_PARMS {
    DWORD_PTR   dwCallback;
    DWORD       dwTimeFormat;
    DWORD       dwAudio;
    DWORD       dwTempo;
    DWORD       dwPort;
    DWORD       dwSlave;
    DWORD       dwMaster;
    DWORD       dwOffset;
} MCI_SEQ_SET_PARMS, *PMCI_SEQ_SET_PARMS, FAR * LPMCI_SEQ_SET_PARMS;