The AEGIS funded accessibility group at the Katholieke Universiteit Leuven have just announced odt2braille, an open source OpenOffice extension that enables users to print directly to a variety of Braille embossers, or to export into either PEF or BRF formats.
You can learn more about the project at it's sourceforge pages, or download the early 0.0.1 release (Windows only for now), or peruse the manual. And of course, being that this is an open source project, you can also participate in development & localization (where you may note that it has be largely translated into 7 languages already).

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