Under Windows I Test some liens form the Quotation from mixxx.cpp line on Windows. The path "QLibraryInfo::location(QLibraryInfo::TranslationsPath)" shows to the Traslation of the used QT Version.
So the qt_<locale>.qm must be at the same directory as on the compield Version.
An other way could be to set this path to <mixxx_dir>/translation on a Windows PC
Under Windows I Test some liens form the Quotation from mixxx.cpp line on Windows. The path "QLibraryInfo: :location( QLibraryInfo: :TranslationsPa th)" shows to the Traslation of the used QT Version. dir>/translatio n on a Windows PC
So the qt_<locale>.qm must be at the same directory as on the compield Version.
An other way could be to set this path to <mixxx_