Someone with an AIW Radeon and Audigy please answer!

[koppelbg]

Alright, the AIW Radeon's audio-out plug can go into either the Audigy's Line-in or Microphone. If I plug it into the microphone jack, I get all four speakers to output. If I plug it into Line-in I only get the left two channels to output. This is only for TV mode. Line-in works perfectly for DVDs... but then DVDs go through the Audigy, so that's meaningless.