Well it seems in the near future you might be lucky enough to have language support for your native tongue in Showtime. Back from vacation Andreas Oman has added a Swedish translation to Showtime. From version 3.1.35 on you can change your language setting via Settings/ Languages. Now this is where everyone else comes in. To contribute if you speak anything else other than English or Swedish you can visit the dedicated forum section for translations.
Starting from 3.1.35 it is possible to translate Showtime to different languages.
To change language in Showtime, just visit Settings -> Languages
Initially I’ve added a translation to Swedish (as it is my native language), see the translation file here
It’s relatively easy to translate Showtime, for details how to do this, please read docs/translations.txt
Please, if you speak anything else than English or Swedish, don’t hesitate to contribute! There is also a dedicated forum category for translations.