Yes, I'll not trust CloneDVD at this point, except for possibly getting rid of titles on DVDs with little protection.
However, I think I found an issue with Mr. Woodcock and AnyDVD Ripper. Actually it happens when playing with AnyDVD active on the original disc, so it's likely with AnyDVD itself.
I took your advice and made a backup with AnyDVD Ripper only and the sneak peeks, which also play when the DVD is first inserted, have audio, but when I right-click in PowerDVD, the audio selection is grayed out. Normally when one plays a title that has only one audio track (like the previews), the menu is still selectable, and if you select it it this case it should show just "English" as the only audio track. I didn't burn it to disc yet, so I'm unsure how the player would handle it.
To verify my findings, the audio menu IS selectable on these previews when playing the original DVD, and also on the DVDFab backup I made for comparison. I admit that I have not gone through all the extras yet, so I don't know if there would be similar issues in any of them... I also didn't get a chance yet to run it through PGCEdit to see if it might "find" the audio track and re-insert it into the list of audio streams.
I've attached the logfile.