How to solve "Direct media object (dmo) is not registed " ..

In my program i wanna use directshow to convert a media type such as
avi to other media type(mkv, mpeg1, mpeg2...) .
I download a piece of source code , in that source code contians a dmo
object and it can be added to the filter graph; but after i compiler
this source code in my pc and run the .exe file; it reports one error
that is " not registed ", and i find in this source code it use dom's
clsid and add it to the filter graph,
The dom's clsid is "
@device:dmo:{BFEC0B4F-422C-4718-BE97-700F70B66311}{4A69B442-28BE-4991-969C-B500ADF5D8A8}
" which stand for one dmo with the function of conveting one media
type to mpeg1/2 media type.
If i wanna get this mpeg convert dmo useable, what should i do? i can't
find this dmo over internet and register it Now : ( ,plz help me.
thx in advance!

lovefly1983