My dog barks at everything...how can i make it stop?

my dog is 1 year and 3 months old and she literally barks at everything, noises, the t.v, anything that that has animals or animal sounds, plus she barks at reflections in mirrors and windows and even when i say no, she will stop for a few seconds and start again, i know she is protective but it is getting to the point where it is horrible, she wakes me up early in the morning by barking, and it is getting to the point where i cant even watch tv anymore without her barking! oh and i like country music and sugarland is one of my favorite bands, apparently she doesn't like jennifer nettles voice because she does nothing but howl when i listen to it! is frustrating...oh and she is a small dog, a mix of chihuahua, wiener dog, and pekingese, so her bark is really sharp and loud! she actually is a quick learning dog, and for the most part she listens really well, any other thing i tell her no to, she listens but idk what it is about the barking! is there anything i can do?