Stephanie default voice

I've just discovered Stephanie, and am very pleased, however, there is one point that annoys me.

The default voice is horrible. 

I know python, but I can' find where in your code you generate your mp3 file. I think that there should:
* Be a item in config.ini
* Be a variable in one of the top level files.

Other than this issue, I am very happy with Stephanie. 
Thanks in advance.