From what I understand, you are not even allowed to air the originals anymore, or at least LFL recalled all copies of it so that the SE was the only one that could be aired. I suppose this may have been done again with the 2004 SE.
Something kind of funny, in 2005, the week before ROTS was released, TBS aired all of the OT. At this point I still hadn't had a chance to see the new '04 changes, so while flipping through channels and happening across ANH, I decided to stick around and see the new Jabba, but it turned out that it was the 1997 SE. Ha, stupid TBS playing the "unfinished" version of the film. Since the 2004 SE was only released half a year or so before, I can't help but feel that maybe LFL decided they didn't want to provide people the luxery of the lovely new changes without them paying for the DVDs.