documentconverter on ox community edition?

[Wolfgang Rosenauer]

Unfortunately there are parts in the documentconverter stack which cannot be licensed under an open source license and therefore download of the component is not possible without a commercial licensing.

[dominiaz]

Preview is requied by open-xchange-documentconverter-server. To download that you need login and password.

Any ideas how to make preview doc/docx on OX Community Edition?