Heat oil in a large skillet over medium-high heat. Add leeks and ¼ c. wine. Cover and cook 7-8 minutes.
Add mushrooms and remaining wine. Cook about 8 minutes more, stirring frequently, until mushrooms are just beginning to brown. Add crumbled sausage to pan and cook 2-3 more minutes.
Add fettucine to pan and toss. Season with salt and pepper.
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