When you create a new post, it is automatically converted to audio using text to speech technology, and a podcast-compatible link is inserted into your post. It’s all automatic – no messing around with settings and configurations.
Please note that a short tag line about this service will be added on to the end of your MP3.
The plugin only inserts a link to the MP3 and sets the enclosure for Podcasting. If you want to have a nice, pretty player I recommend you install the Blubrry PowerPress podcasting plugin, which comes with your own player and lets you customize other podcasting options like your feed description and logo. 
Any plugin which turns a MP3 enclosure to a player should work.
What happens after I click Post?
<ul>
<li>Your post contents are sent to the server and put into an encoding queue</li>
<li>The text is automagically converted to MP3 audio</li>
<li>The first time your post is viewed, the URL of the MP3 is grabbed from the server</li>
<li>From then on, the MP3 URL is cached, to increase performance.</li>
<li>30 days later, the file expires and is deleted. </li>
</ul>
This is a BETA service. We are still ironing out all of the wrinkles, so please don’t be surprised if it stops working for short periods of time! We assume no responsibility for any problems you may encounter running this BETA NON PRODUCTION service.

CastMyBlog – Text to Speech Podcasting

When you create a new post, it is automatically converted to audio using text to speech technology, and a podcast-compatible link is inserted into you …

ondoku3

It is a plugin for WordPress of Ondoku that converts text into an audio file and reads it aloud. With this plugin, you can have your blog text read aloud.
<ul>
<li>Free registration is required for reading aloud to use this plug-in. 
https://ondoku3.com</li>
</ul>

text-to-speech Ondoku

Create an audio file that automatically reads the text aloud when posting a blog, and insert it with an HTML tag at the beginning of the blog.

CastMyBlog – Text to Speech Podcasting vs text-to-speech Ondoku