this is good news, i am glad you found a solution.

What seems odd to me though is that we see
19/04/2008 04:20:54 p.m. informacion Pista #2 (AUDIO): Audio: ac3, 48000 Hz, stereo, 192 kb/s [COPIA RAW]

and you it says "copy raw" this means that the audio file has not been touched by convertxtodvd at least for the first files converted here.