Thank you, I added itunes as an exception but it doesn't work! Only unloading WB fixes the problem how can that be?

There are (at least through XP) certain font/text settings which can be defined in WB which apply globally to the GUI, even in apps not 'skinned' by way of exclusion, although I can't swear that is the case in Win7 (not there yet).  Unskinned apps still often pull some, but not necessarily all, font settings from the OS in many cases.  Apple's apps have usually used their own fonts, though, so I'm not certain in this case, but the fact that it is skin-specific suggests so.  Finding out is a time-consuming, change-one-font-at-a-time process until you find the one that it's using in that info window.  Changing it (in WB) will usually screw up  the appearance of the font somewhere else since the font settings are usually deliberately set for that 'somewhere else'.

My experience has been that there are inevitably unresolvable issues of this kind because of the way the OS hard-codes certain things (seemingly entirely arbitrarily) and variability in the way apps handle/use font settings.  One of the unfortunate aspects of the way MS does things, one that Stardock's developers cannot work around.  Similarly true with the Windows menu item highlight color affecting font rendering in skinned menus, forcing the skinner to compromise one or the other.

All of which may not solve your issue, or have anything to do with it.