More optimization, better experience. Support portable mode. to use it, rename custom_t.ini to custom.ini !about error message: "This appication has failed to start because api-ms-win-crt-runtime-|1-1-0.dll was not found". a) Install corresponding vs 2015 redistributable files. (vcredist_x86.exe or vcdist_x64.exe. You can also get it from official MS site) b) Or download ucrt file(ucrt_x86/64.zip),and drop all the dlls into the folder containing light.exe. Light can play MP3/MP4 files using FFmpeg under Windows without WMF enabled(for example Windows XP). (starting from light 42test) System requirements: Windows: 32 bit: Winows XP SP2 and above 64 bit: Windows 7 and above GNU/Linux: GTK+ 2.18 or higher gLibc 2.17 or higher Pango 1.14 or higher X.Org 1.0 or higher (1.7 or higher is recommended) libstdc++ 4.3 or higher