I am looking for free (no cost, and if open source then that's better) software that allows me to import an mp3. I've heard that dragon is a leader for non-free, but am wondering what is available for ...

There's still no getting around the fact that text-to-speech conversion doesn't sound quite, well, human. VozMe, a free text-to-speech web app, sounds better than you'd expect for a free web service, ...