Hi, i bought a cheap Aspire DVD player. It said it plays CD-R, and all the other popular medias. I have had a lot of trouble though playing movies on CD-Rs. At first only TDK discs would play. All other discs would play, but the picture would roll from top to bottom. Now i just got some new TDK blanks, but 2 out of the first 3 , are not playing right, the picture is rolling. Then i found some old Memorex discs, 3 of 4 rolled. Is there any type of setting to stop this from happening? Has this happened to anyone else with other DVD players? Thanks.-A.C.