So I have read almost every post trying to find the best way to create wav files to put on my Jeti DS-16 and so far the best way that I have found it to download "type and speak" app on your phone. I have an android so not sure if this app is on IPhone but man does this thing work awesome. I type it speaks then save file. It formats into wav format. I have created like 30 files within a few mins. Now just transfer them from my phone to the Jeti. I know others are using two programs to speak then record but give this a try. I think it will make your life my easier creating wav files. it will ask if you want to download the high quality voice, I recommend doing that. It has a tone of different languages and its Free!.