Hmmm..... I purchased a really great little portable Sony DVD Player a few months ago. Prior to purchasing I checked out that my DVD's burned using my Sony DRU500 would play just fine. They Did.
Last week my DRU500 started playing up and due to time constraints / project deadlines I just went out and bought a new Sony DRU530... of course expecting this would be just as compatible with my player.
But... NO. I cannot get any of my new DVD-R's to play in this dam thing. They do play in other standard DVD Players I have in my house.
This is just a real bummer!
[edit]... I just found that DVD-RW disks burned with the new DRU530 work just fine. What a weird world this is!