Not the same. Here's how I use them. "Listen to you!" > "Oh, listen to you! You're acting so smart / tough! (But you aren't smart / tough.)" To me, it's kind of a sarcastic expression. You can use it with other adjectives, "smart" and "tough" just came to my mind first. "Listen to yourself!" > "Listen to yourself! Do you understand what you're saying?" Usually means I don't agree with what someone is saying, or I think what they are saying just doesn't make sense.

No, it' not the same. First sentence you use when you are angry for someone like: "Listen to you! You never will talk to me like that. You understand!?" Second senntence you use when someone talking some stupid things: "What are you talking? Listen to yourself! That not have a sense!"