On a related note: we've been adding languages for creators to post works in as we get them. (The links on that page don't, unfortunately, work at the moment, but you can use the Language filter on the Works Search and get results.) If your members want to post their work in a language not listed, have them send Support a request with the language name, and we'll see if we can add it!
Addendum from the Support side of the aisle