Producing rich content with many voices is easy
Can I change voice or/and language automatically within my text?
Yes, do voice switching by using this tag: \vce=speaker\ like in the following example: “Good morning, ladies and gentlemen, \vce=speaker=Julie\ Bonjour mesdames et messieurs.”
Just pick the name of the voice that you want to use and the text-to-speech will immediately switch to the new voice right after the tag. For special voices, like the voice with emotions or variants of the voice, you need to type the name without any space, parenthesis or underscore.
As for instance Will (LittleCreature): \vce=speaker=willlittlecreature\, enjoy!