But correcting the DC offset? I don't know. Why would the offset be wrong? How do I know what it should be? I think I'll leave it as it is.
For who is interested, here you can find two samples of PCM audio from Hope (analogue and digital capture) to compare. If the difference between the 2 is really as small as I think it is, I'm not sure I will go thru the trouble of capturing the audio digitally and sync it up with the video when the audio I already have is almost as good and is in sync perfectly.