Id' add some shallots with the mushrooms then add tehwine and reduce before adding the broth and reducing.
If you are having a wine with the steak, a hearty red is the usual choice. Cabernet Sauvignon or Zinfandel will work.
If you're not having wine with dinner, any dry red will work. Marsala is also a good choice.
"If you want to make an apple pie from scratch, you must first create the universe." -Carl Sagan