Wazzles said:

I was just now watching the duel, and when Darth Maul ignites his lightsaber, the audio for the blade on the left comes out of the right channel and the for the blade on the right the left channel. It seems that you may have your channels backwards.

I just watched it to confirm, and from what I could tell, the blade audio was coming from both channels. Perhaps it is a problem with the source? I have no idea how the channels could be backwards, but LucasFilm made the same mistake in 2004 for the DVDs...