Brad,
This doesn't match with my experiences... when I had the MC girder plugin installed, I used it as a target in Girder. In the Girder "target selector", I had the choice of "MJ Girder Plugin" for Class Name. I could then use Girder's "Command" to send the WParam and LParam values to MC, *regardless* of MC's state (that is, MEGA, MINI, or Hairstyle). In fact, I had gotten a .gml (from Girder's Website or from a French-named person on one of the Girder forums???) that already had the LParams for all the common commands. The "Group" name was "Media Jukebox 8".
Using the Girder plugin, I had the added benefit that I could just as easily send keystrokes to MC - the most important for me being the "menu" key to toggle the hairstyle (in full-screen mode).
Again, if there were MCC_COMMANDs for every keyboard shortcut *and* the SendMessage to the MC application worked regardless of MC state, then I'd agree there's no user for the Girder plugin. If you can help (me) get the SendMessage working in Hairstyle, I'll be halfway towards being happy - and most grateful!!!
I also seem to remember there being a short period when MC first came out that the plugin didn't work - I think I remember Jim saying they hadn't gotten around to making the plugins "MC" compatible. It seems a week or two went by and then the plugin installed just fine.
Scott-