Me doy cuenta de que esta respuesta ya no puede ser relevante para la persona que hace la pregunta - pero he notado esta pregunta en el foro ahora - y otros pueden encontrar interés. Para usar los avatares Voki sin conexión, usa la opción 'descargar' de la aplicación móvil Voki, que genera un vídeo.

Sin embargo, tenga en cuenta que la licencia Voki le limita a un uso educativo. Para utilizar nuestros avatares de habla comercialmente, ya sea en línea o sin conexión, consulte nuestro producto SitePal.
Saludos,
Gil

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I realize this response may no longer be relevant for the person asking the question - but I noticed this question on the forum now - and others may find interest. To use Voki avatars offline - use the 'download' option in the Voki mobile app, which generates a video. 
Please note however that the Voki license limits you to educational use. To use our speaking avatars commercially, whether online or offline, see our SitePal product. 
Regards,
Gil 

This seems to be a different issue.

Your code calls 'loadText' instead of using 'sayText' to invoke speech. 

loadText does not initiate speech.

I'm note sure why any audio is spoken. 

Please take a look at your code and see if you can spot the problem.

If you have specific questions - please shoot a note to support@sitepal.com

See our own sayText support example for reference - 

http://www.oddcast.com/support1/saytext_classic.html

 Best,

Gil

We've temporarily replaced all affected voices with comparable voices earlier this morning.

About 1 hour ago the problem was resolved and all voices have been restored. 

Let me know if you still notice a problem of any kind.

We are on it - should have it corrected soon.

We experienced a problem with our Naospeech voices for several hours yesterday.

The problem was due to a software update that misbehaved unexpectedly despite prolonged evaluation prior to deployment.

Problem was cleared up at 8:15 pm EST last night.

Apologies to all for the inconvenience this has caused. 

We will continue to strive for problem free operations. 

Gil