This BD plays in a BD player, has audio only, in 7.1 DTS-HD MA. Sounds terrific in my home theater system. I want to make a copy to play in my car, in MP3 format. With other music DVDs (not BD), I would use Vegas to render just the audio track to MP3. However, with this BD, I first ripped it using AnyDVD HD, got an .m2ts file of about 5 GB, I then imported it to the Vegas timeline. Tried to play it in the Preview window, no sound at all. ??? What's going on?

Thanks,

You seem to be taking the complicated approach. You could use DVDFab (http://www.dvdfab.com/tutorial/Blu-ray-to-Mobile-Audio) to rip the audio from the BD directly to an MP3 file.