excuse the ignorance but I can invoke the dll in this way?
%x = $dcx(OpenDialog,showhidden filemustexist $chr(9) $mircdir.avi $chr(9) All Files (.)|.|Music Files|.mp3;.wav;.ogg;.mid|Multimedia Files|.avi;.wmv;.mpg;.flv;.mp3;.wav;.ogg)
etc.
if ($xdid($1,1).isloaded) { //echo -a $dll(spotify.dll,Playing,.) }