I don't know of an adapter, although there should be some adapters around for the old mini CD's (like this one ). If that works with a DVD, that's going to be the only way for your changer to handle these discs, but I didn't find any marketed for DVD so there may be issues with compatibility even with one. In that case, the best bet may be what Jason suggested - use a computer to transfer the data from mini-DVD to standard 5" DVD. The bright side here is that you could probably fit two mini-DVD's worth of content onto a single standard DVD. This would also be good for leaving the discs in the changer long-term (cheaper and more reliable than a bunch of those adapters). If you are just checking the discs before archiving to 5" DVD, you might even consider a cheap (and it could be real cheap if you wanted it to) single-disc player to supplement the changer.