I have mac os x 10.4.8 I have burned a ton of dvds, all using idvd, i have not changed the way i burn, when its done encoding, i place the disk back in to the computer to test it, it works, works great!!, then i eject it and place it in my stand alone dvd player, and it says disk is physically damaged or dirty, but its not, iv done a number of tests, also, my other movies still work, the menu works still, but it has that error when i push play, or enter when the play movie selection is highlighted. I am thinking the dvd burner is shot? but there is still data on the disk, and the menus work, so why not play a movie? other than that posible cause could anyone help me figure out how to fix this?? PLEASE the dvd plays fine when re enterd in to the mac, but no longer wors in dvd player! HELP!