Author: William Gerbert 

Answer:

Displaying the multimedia properties dialog from the control panel is very easy 
with the following code; the secret is to know to call rundll32. 


1   begin
2     // Audio
3     WinExec('rundll32 shell32.dll,Control_RunDLL MMSys.cpl,,0', SW_SHOW);
4     // Video
5     WinExec('rundll32 shell32.dll,Control_RunDLL MMSys.cpl,,1', SW_SHOW);
6     // Midi
7     WinExec('rundll32 shell32.dll,Control_RunDLL MMSys.cpl,,2', SW_SHOW);
8     // CD Music
9     WinExec('rundll32 shell32.dll,Control_RunDLL MMSys.cpl,,3', SW_SHOW);
10  end;