Hi,
does DVDA 2 support 5.1 surround sound on preview when audio is of ac3-format?

I've been trying to make a DVD which has 5.1 sound but I cannot get the sound right in DVDA preview, instead it comes as stereo. In Vegas the same material (before encoding) works fine as surround.

My workflow is as follows:
- first to make the video in Vegas 5 and the sound is 5.1 surround
- then I render it as .avi, giving me the video footage + embedded stereo sound
- next I render again the sound separately to .ac3
- then I import avi to DVDA + .ac3 track as separate soundtrack
- this gives me compilation whichs has one video track + 2 soundtracks

In preview only left and right speakers are submitting sound and the surround sound has much lower volume than stereo.

I'm obviously missing sumthin here...