exception EMCIDeviceError in module Project1.exe at 000EF073
这是个什么错误？怎么解决呢？哪位高手帮忙解决。。。谢谢！

EMCIDeviceError is raised if an error occurs when accessing a multimedia device. The most common cause for the exception is trying to access a multimedia device before it has been opened with the Open method of TMediaPlayer.
这是delphi帮助中的说明，你自己看吧。