DVD formats are already changing, Blue Ray and HD-DVD are already coming and once one of the two wins out they will replace the current DVD formats now offered in computers and the old format will become the modern version of the floppy. Preservation, as we have seen can be a complex headache and there really doesn't seem to be a great solution anywhere. It also seems that interest in historical preservation is fading---railroading is an exception, mainly because the interest in modeling keeps the old stuff around (at least photographs). There have been many good ideas presented here, and all have some merit. Here ya go, keep it all, burn it onto hard drives and DVDs too, when new and better DVD's, hard drives and memory chips come around, burn it onto that. Make dupicates and send them to interested museums. Whew, a lot of work. OK, feeble attempt at humor.