I had some time this evening to take another bash at doing some of the audio for the '97 SE so here is what I have done so far:

1. I used MPEG streamclip to export the following from DEs AC3 files:
- Stereo AIFF for Left & Right
- Mono AIFF for Center
- Mono AIFF for LFE
- Stereo AIFF for Left Surround & Right Surround

2. I used Audacity's change speed effect to speed the audio up by 4.271% I then exported this in the same configuration as listed above.

3. I opened up my '97SE project file in Final Cut Pro and sync'd the center channel to my original LD audio captures. The audio sync'd up perfectly this time no need to make any time adjustments in Final Cut at all! :D

4. At this point although the timeline has 6 audio tracks, it is outputting them as 2 channel stereo so I went to configure the audio output and this is where I got stuck. There is a 5.1 surround preset which has the following downmix settings: Left 0db, Right 0db, Center -3db, LFE none, Left Surround -3db and Right Surround -3db

The reason I got stuck is I wasn't sure if I needed these downmix settings or not as I am using Darth Editious' AC3 captures as the source. Should I leave the preset as it is or should I turn off the downmixing?

I was also wondering if anyone can help me figure out how to configure the following settings in my AC3 encoder?

Many thanks in advance. :)