Beta version with support for the languages - 한국인, Tiếng Việt, bahasa Indonesia, Português, 简体中文 and 繁體中文 is available for download.
It will be of of great help if you can try this version in your language and provide us the feedback.
The beta version 1.1.14.1 is available for download at
https://s3.amazonaws.com/downloads3.fxsound.com/fxsound/2/Beta+Testing/fxsound_setup.exe
By default the OS UI language will be used for FxSound UI. If the language is not supported, then UI will be loaded in English.
To override the OS language and load FxSound in a different language use the command line option,
FxSound.exe --language=language code
The command line options available are,
Korean
–language=ko
Indonesian
–language=id
Vietnamese
–language=vi
Portuguese
–language=pt
Chinese (Simplified)
–language=zh
Chinese (Traditional)
–language=zh-TW
–language=zh-HK
–language=zh-MO
–language=zh-Hant
For example,
FxSound.exe --language=ko will open FxSound in Korean even if the OS UI is in English