ref: 3b4bd3b3a9fe05d468babe5d654a5f0cd4b0e28c dir: /plugins/foo_mp4/compiling.txt/
How to compile foo_mp4.dll: Extract the 2 directories (\foobar2000, \pfc) from the foobar2000 SDK to this directory, open the foo_mp4 project for VC and compile.