The symtoms you're describing are very good example of what happens if you're using the OLD RR and/or Cdrip application (not the latest versions). I'd re-download both to be sure (this will take care of at least the "showplugin" voice issue).
But just to be sure: under d:\freedb\ you should have the folders like "rock", "misc", "blues" etc. Make sure it's the windows local DB format.
The Autoswitch for Day/Night gamma is still NOT implemented.
The CDRip will look on the local DB first, then if nothing matches try to look up online..