I have an XBOX 360 connected to a Home Theater using the Component HD Cable. The RCA audio output (Red-White plugs) are connected to the audio system. When I play a DVD on the XBOX 360, the output audio on the Home Theater system works as expected (5.1 sound) but when I play an AVI file which has 5.1 AC3 audio, the sound that I get is Stereo.

First I thought the problem might be on the video files I have. But if I play the same videos on a computer, I got the 5.1 output.

Does the XBOX 360 decodes 5.1 AC3 as Stereo only?
if it does, is there another audio format which the XBOX 360 is capable to decode properly?


PD: I have configured the XBOX 360 audio selecting 5.1 output or WMA Pro, in both cases I got the same results.