Кстати, mingw версии не только ММХ нужен.
На АМД-шном проце не взлетает.

Скрытый текст

J:\zxtune_r2239_mingw_x86>zxtune123.exe

terminate called after throwing an instance of 'std::runtime_error'
what(): locale::facet::_S_create_c_locale name not valid

This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information.
[свернуть]

WinXP SP3 x86
AMD Athlon 64 X2 (MMX(+), 3DNow!(+), SSE(1,2,3),x86-64)