Everybody knows LFL screwed up the music for the 2004 audio track. In some places the music in the rear channels is reversed. For the trenchrun part they said that to change the music when the x-wings roll over and dive towards the Death Star was a "deliberate creative decision". Ofcourse that turned out to be bullshit since the french track (not just the 2.0 but also the 5.1) has the correct audio.

Btw, adywan, I hope for your edit you use the french 5.1 for the trenchrun part? It's only a few seconds but it makes all the diference.