Hello,
the voice file is always a seperate download. So its no wonder you see no .voice file in the lang directory :-)
It seem that currently the automated buildsystem has some problems, and no voicefiles are available. But you can easily generate your own voicefiles with rbutil or the buildsystem (search the wiki for details).
Also remember that the fuze is still a new Target, so there might be some problems with voice on this. (If you find problems, please report in flyspray).