If you change anything in itunes it would certainly be compatible for burning, I would think. I'm not sure what exactly you're trying to do though.
Okay, who know how some songs can be quiet, like from Walmart. When you buy from Walmart, you get Wma's. And there quiet when you burn it to a cd. Now I want to make the sound louder. I do that on Itunes, but when I get to the burn cd part, it doesn't transfer to the cd and goes back to the original.
I've never noticed any WMA being quieter than normal, but I don't buy from Walmart either. You could try this: http://mp3gain.sourceforge.net/ I've heard it worked, but I'm on a mac right now so I can't test it.