Whatta mess!

Okay,
I have discovered a strange consistency.
Both my Mac and PC can only see the files in the “VIDEO” folder of the DVDs.
The suffix of those files is “VOB” and “BUP’…
Even my screen reader calls out “File type VOB” or the other when I click on them.
So this means that we now know the beast type.
What do I do now?
Do you know any sites where I can download the right stuff to help me fix this problem?
Could you at least tell me specifically which stuff I should look for?
Key words?
-ED-
[This message has been edited by 3351 (edited 05-01-2005).]
[This message has been edited by 3351 (edited 05-01-2005).]