Gained 5.1 Surround, then lost it again!

[xiaodidi]

Mac OS 10.3.9 - Sonica Theater 1.6 driver - VLC 0.8.2

I had the known problem of scrambled audio channels with VLC and 6-channel surround. I followed the instructions in the README file, concerning the Audio MIDI Setup application. That didn't work. However, after resetting the VLC preferences to default values, I suddenly got true six-channel sound on all the right speakers (Logitech Z 5300).

Unfortunately, the very next day, after logging in, everything was back to the scrambled sound status. Trying the same procedure didn't work.

Is there anything I am missing?

Thanks for your help!

[xiaodidi]

Looks like VLC plays Dolby Surround soundtracks OK now, but the plain stereo soundtracks comes out of the left front and subwoofer channels. This is confusing when a movie has two types of soundtracks, e.g. for the DVD menu/trailers and the feature film. I guess it's a matter of adjusting the Audio MIDI Setup settings for stereo movies again.

Oh well, I should contribute to the OS X development instead of whining.