VoicePHP Audio File Recording

I am using VoicePHP .

I am brazilian and when i run the command echo 'Ola mundo';

which is Hello World in my language. However, using this software, the pronunciation is not very good - can I do something? Also, I would like to know if I can record a message in MP3 or WMA format and run it.

I asked for a support channel from VoicePHP developers, Tringme, and they answered this:

You can specify an audio file. See http://voicephp.com/developers.html for more details and checkout http://code.voicephp.com .

But I haven't found anything specific.