Natural Reader. The next time you want to hear your words read aloud by someone else's voice other than your own, try it. It comes in handy. Sometimes hearing your words aloud helps you to understand where a bit of dialogue or narrative in your writing is going right (or wrong).
I read parts of my own drafts aloud all the time, especially dialogue. It always helps to hear it spoken. Read aloud, you can tell if a passage is flowing naturally or whether your dialogue feels real or stilted, for example. It's much more effective than simply reading your words over and over. Merely looking at your words and hearing your words can be completely different.
Next time you're stuck, try it. Plus it's fun and who doesn't need a little fun every now and again?