These files are NOT needed to run Speed-Dreams-2. If you want to BUILD Speed-Dreams-2 and you are using Visual Studio, one of these may work for you. You only need one of the files. The file names contain the Visual Studio version 3rdParty-2.3.0-vsXXXX should be used to build the released code. 3rdParty-2.4.0-vsXXXX are experimental and should be used to build the trunk code. (unstable) If none of these work for you, the main source distribution contains a packaging/3rdParty-devel/CMakeLists.txt and a readme.txt that may be helpful.