Random notes from email exchanges:

A bfc that produces muDsts from simulation files looks like this
root4star -b bfc.C'(10,"MakeEvent,ITTF,NoSsdIt,NoSvtIt,Idst,VFPPVnoCTB,logger,-EventQA,-dstout,tags,Tree,EvOut,analysis,dEdxY2,IdTruth,useInTracker,-hitfilt,tpcDB,TpcHitMover,TpxClu,McAna,fzin,y2012,tpcrs,geant,geantout,beamLine,eemcDb,McEvOut,bigbig,emcY2,EEfs,bbcSim,ctf,-CMuDST,sdt20120501.060500","pp200_QCDprodMBc.fzd")' -q > & Log1

There is  an fzd file in avossen/tmp/4jason/

The code is available at
StRoot/StFgtSimulator/
and should also be available as

The bfc to run it is in StRoot/StFgtSimulator/macros/bfc.C
You can run it from the StFgtDevel dir with the following
command line:

%root4star -b
StRoot/StFgtSimulator/macros/bfc.C'(10,"MakeEvent,ITTF,NoSsdIt,NoSvtIt,Idst,VFPPVnoCTB,\
  logger,-EventQA,-dstout,tags,Tree,EvOut,analysis,dEdxY2,\
  IdTruth,useInTracker,-hitfilt,tpcDB,TpcHitMover,TpxClu,\
  McAna,fzin,y2012,tpcrs,geant,geantout,beamLine,eemcDb,\
  McEvOut,bigbig,emcY2,EEfs,bbcSim,ctf,-CMuDST","pp200_QCDprodMBc.fzd")'