Dear Log,
Whee! I mailed off to Lincoln Stein the newly internationalized Apache::MP3, with a few major dozen languages localized for it. I was satisfied that I'd made all the necessary changes to the core modules to handle all languages; the right-to-left languages certainly took some doing, but it's pretty much working fine now.
The larger Apache::MP3 multilingual localization project isn't "done" tho -- I'm still chasing a more languages; I just don't think that the core modules will have to be modified to accomodate whatever new ones I get done in the future.
Now to see what subclasses break...