I don't think I was clear enough.
I think you were, so was I:-)
I would like to hard code where the data is actually located instead of makingit dependant upon where the filesystem information is. With this in mind Iwould like to scan the data to find the relative locations to each other so thatI the file data will ALWAYS start at block 2048 (for my purposes).
And by replacing replacing "return 0;" in DVDLayerAlignment (from previously referred http://lists.debian.org/cdwrite/2004/07/msg00102.html) with "return 2048-extent;" you should achieve exactly this. A.