It's hard to say. The skip protection can vary. With regular CDs, it's one way. With MP3-CDs (CDs that are burned with .mp3 files to read), it's another. MP3 CDs are just data discs with files on them. CDs are a copy protected format that are filled with specific data in a certain format (like DVDs and Blu-ray's). The skip protection likely is determined by the disc type being read, how healthy the disc is (an immaculate one versus a scratched up one), so on.