static extern int AudioSessionSetProperty( AudioSessionProperty inID, UInt32 inDataSize, ref OverrideAudioRouteType inData);
static extern int AudioSessionSetProperty( AudioSessionProperty inID, UInt32 inDataSize, ref OverrideAudioRouteType inData);
static extern int AudioSessionSetProperty( AudioSessionProperty inID, UInt32 inDataSize, ref OverrideAudioRouteType inData);
static extern int AudioSessionSetProperty( AudioSessionProperty inID, UInt32 inDataSize, ref OverrideAudioRouteType inData);