Currently OpenMugen is discontinued.
I ( SakirSoftt ) decided to discontinue my work on OpenMugen and work
on my closed source 2D Fighting engine ShugenDo.
Maybe in the future i will release my code opensource.
The early source code of OpenMugen is still available under the file release of OpenMugen on SF.net.
You can get a look on ShugenDo at www.sakirsoft.com