I recently encountered a problem that I haven't before in TMPG DVD Author. I usually rip my files with DVDDecryptor, then load the VOBs into TMPG. For a certain set of VOBs, the audio will not show up, even though when you are selecting audio streams, there is a 2 channel AC3 option avaliable...I thought it might be because I needed that AC3 plugin, but then realized that I had done several other DVDs with AC3 audio...the real question is why isn't the audio showing up? I mean, it IS part of the VOB...