While I can see the possible uses, I fear that it will make us even lazier as a species, as did the calculator. There is much to be said for actually learning a language. It is a sign of respect towards the one to whom we are speaking. I'd hate to think that my children will only be able to communicate in other languages once they have paid their Microsoft license fee!

If your audio quality is excellent, you can use the software to recognize the voice .Automatic voice recognition technology is not still matured to produce accurate transcription for non-American accents, or with people speaking quickly or multiple speakers.If your audio quality is OK or verbatim audio better to go for manual transcription. For multiple speakers audio files, better to go for manual audio transcription.
http://synergytranscriptionservices.com/Audio-Transcription.aspx

Sounds like a regular voice synthesis program to me. Nothing like the speaker.

Good. First the speed of communications goes to zero, the world goes to bitcoin and now the language barrier disappears. One world government is inevitable.