I want to get the audio off an SVCD (burned on CD)

I know I could extract the mpg with IsoBuster, then demultiplex the audio using TMPGEnc Mpeg Tools

....But, it looks like I could just demultiplex (using tmpgenc) directly from the "AVSEQ01.MPG" on the CD. I would have no reservation about doing this, but I know that SVCD is burned using Mode 2....so, does anyone know if extracting the audio directly from the CD will compromise the integrity of the data??