This utility can send controls to Marc instance from a command line.  For
example, if you say

	PlayCommand P

It will start playing; 

	PlayCommand S

Will stop playing.  What this really does is send a WM_USER to the Marc
main window with the character you specify; this is handled in PreFilterMessage
in Browser.cs.  The currently supported commands are:

 P - Play
 S - Stop
 F - Skip to the next song
 1 - Rate the currently playing song as 1
 .. 
 1 - Rate the currently playing song as 9

