mdPlug is a 'MultiDec compatible plugin', it was tested with :
(ProgDVB 4.80.5, ALT-DVB, DVB-Dream, MyTheatre)
this version will help you decrypt channels using BISS, CW, DCW, CCW keys.
also decrypting ECM with vModules but you must install (libeay32.dll, libssl32.dll)
files to WINDOWS\SYSTEM32 directory in order to use ECM decryption.
and (*.mdl modules files must be in 'vModules' folder of mdplug directory)