MediaPlayer 8 Skips across CD

All of a sudden, when I place a recorded CDR in my Plextor scsi CD-ROM drive, MediaPlayer skips from one title to the next without ever playing. This same CD not only worked fine previously, but if I put the drive in play from its front panel and listen through the headphone jack, it works fine. If I try it in another drive, MediaPlayer plays it fine as well. Any thoughts? (Other than don’t use MediaPlayer, please.) Thanks in advance.