ref: b5b68e541c7164b5be892b3f56d2d2b2a2f511a2 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.