Hey, I have 3 CD's that I BELIEVE are protected with Key2Audio. The reasons being that they say "This CD will not Play in PC/MAC" and they mention "Sony Music" on a ring of the CD on the Data side. I've been trying different methods to burn/rip the CD's but I haven't been succesful. I've tried CloneCD, Nero, Easy CDDA Extractor, Alcohol %120, and Exact Audio Copy. I've read about the "marker trick" but I'm afraid of damaging the CD. If you can suggest any programs I haven't mentioned or any advanced settings I need to configure on the mentioned or un-mentioned program, please post them here. Thanks!