I'm trying to reassure someone that FLAC files are lossless. However, even though I understand that they're lossless, I was wondering about other contributing factors that might affect it's quality, before it even becomes ripped or encoded. My main concern is the CD-ROM/DVD drive. This particular person is an audiophile, and won't settle for less than the best. Do CD-ROM drives employ any type of error correction? Like, is there anything from preventing the loss of data from, for example, a cheap CD ROM drive, or scratched media? Scratched media would be a good example here. It's the equivalent of a scratched CD when copying files to a computer.. or at least thats the analogy I'll use. We've all had scratched discs that STILL copied, and after the file copying process, those files were intact and useable, even though the drive had to read over the CD a dozen times. Is this the case with audio being ripped from a CD to a lossless format, such as FLAC? I really don't know much about computer audio, or audio altogether, but I do have a pretty good knowledge of hardware/software. The simple question in the end is, if I copy audio from a CD and encode it to a FLAC file, is that *exactly what was, and everything* that was on the audio CD? Thanks guys.