I have the Concert system in my S3, and over the last couple of days the CD has stopped playing, so I either jump to the next song, or previous song, or even back to the radio, then the CD is okay and starts playing again. This morning, it did it again, and when I try to go the the next/previous track, nothing happens. I can jump back to the Radio okay and hear it. I tried ejecting the CD to see if there was a problem and the screen just says "CD ERROR" and doesn't eject it..... Any ideas before a trip back to the dealer????