[Dev-C++] Checking if Mediaplayer is playing

[<A_B...@gm...>]

Hi,
how can I detect if the Mediaplayer(2) is playing or is stoped ???
I start playing a media file with
  ShellExecute(0, "Open", "filename.mp3", "", "", 1);
and get the handle of the Mediaplayer with
  FindWindow("Media Player 2", NULL);

Now I whant to close the Mediaplayer or load another media file, if the currend media file has 
stopped playing...

Any suggestions, maybe with the SendMessage() API-function ???


tnx, Acki