Project completion

Hi All,

I develop course content that supports 5 languages - EN, ES, DE, FR, and CN. I have a lot of stuff to develop, and am curious if anyone knows of resources that can help me get this done. How I am working is to develop the content in EN, and then framework to support the other languages. I will need help with getting the translated text into the various slides, voiceover into it and synchronized. 

...any suggestions?