Graphics are not one of For the Glory's strong suits, and it really doesn't have to be. Like other games in the series, or really any strategy game of this type, the real game is embedded in numbers, menus and a few pawns scattered across a map. Sure, big, bright 3D things and Google Earth quality maps would be great, but ultimately unnecessary. It's easy to find things on the U.I. menu (through the map presents some issues), identify things on a map... you really don't need any more than what For the Glory gives you.
Music is equally subdued. It's appropriate for the time period (or what I would imagine is appropriate given my limited knowledge of music history) and offers something in the background as you work your way through the campaign. You may even find yourself humming a few bars, or at least I did.