Is it Possible (feasible??) to have the VOB Passthru option select ALL the audio formats?

I am not sure about whether this is feasible or not but I have a scenario whereby I stream my VOB to a PS3 when I select the AC-3/5.1 setting and the audio is fine but when I stream to other audio kit it will only work if I have selcted the AC-3/2 audio setting... I worry that I end up losing some of the audio quality available when I do VOB copy by having to select the lower format...

I now do a straight Disk copy then use VOBMERGE to bring my VOB's together into 1 VOB file to stream...

Would be nice if DVDFAB could do this on it's own...

Thanks