To download source code, use the SVN protocol.
All softwares are written in standard C++, and each software may use additional thirdy part libraries. A "compile.txt" file is included to provide compiling information, like additional libraries needed.
You can use the following command to download the main trunk development branch. Note that this includes the last improvements in the code, but it may also contains new bugs or even can be completely un-compilable.
svn co https://liveformusic.svn.sourceforge.net/svnroot/liveformusic/trunk liveformusic
You can also browse SVN repository online. See Sourceforge page for more information.