Brodcast Background loop

hi guys… :smiley:
i’m working in brodcasting field and i want to create looping background, like in the CNN and AL Jeaerra news… i know i can make it by AE but i don’t know much more about AE so can anyone from the expert people tell me or make a tutorial for me and who cares… i saw an examp[le before but i forgot where i put it in my HD ;( so i’m looking now and i’ll up load it :smiley: .
thanx