YASAPI NT's 2.0.0-beta9 release consists of * "out_yasapi-nt-2.0.0-beta9-msc.exe": the plug-in "out_yasapi-nt.dll" compiled with a community edition of the Microsoft C compiler and wrapped into a NSIS installer, * "out_yasapi-nt-2.0.0-beta9-msc.7z": the plug-in "out_yasapi-nt.dll" compiled with a community edition of the Microsoft C compiler and packed into a 7z archive which has to be unpacked and the plug-in copied to the directory "/Plugins", * "out_yasapi-nt-2.0.0-beta9-gcc.exe": the plug-in "out_yasapi-nt.dll" compiled with a MINGW edition of the GNU C compiler and wrapped into a NSIS installer, * "out_yasapi-nt-2.0.0-beta9-gcc.7z": the plug-in "out_yasapi-nt.dll" compiled with a MINGW edition of the GNU C compiler and packed into a 7z archive which has to be unpacked and the plug-in copied to the directory "/Plugins", * "out_yasapi-nt-2.0.0-beta9-src.tar.gz": the plug-in's source code, * "README": this README file. Beyond that you'll need a GTK runtime for Winamp you might download from https://sourceforge.net/projects/yagtk-rt/files/