Use Google Text To Speech

We type in the browser:
translate.google.com/translate_tts?tl=en&q= some short english text

or write the google-tts.sh script:
#!/bin/sh
text=`echo $@|tr ' ' '+'`
file=`echo $@|tr ' ' '-'`.mp3
wget -U Opera "http://translate.google.com/translate_tts?tl=en&q=$text" -O "$file"

use this: ./google-tts.sh some short english text