Hi, Gissah,
It seems you are documenting, piece-by-piece, your investigation into Windows Media multicast. :-)
As you must know, the text you provided represents the contents of an encoded NSC file. More information, including information on the encoding algorithm, can be found on MSDN. A good starting point is here: http://msdn.microsoft.com/en-us/library/cc236197(PROT.10).aspx.
-Chris