Apart from burn defects I'd suggest the closest way to replicate your CD's is to load it in your Mac then use Disk Utility to create a disc image of it. Then burn it to good reputable discs at as slow a speed as you can personally handle so that the laser has a good clean shot at writing to the disc. Cojcolds Alex <lists at lexial.ca> On Apr 27, 2005, at 21:36, Kansas Territory wrote: > If I import as AIFF files and then burn an audio CD of these files.. > am I thus making a DUPLICATE copy ? No. It is virtually impossible to make a duplicate (identical copy) of an audio CD on a Mac or a PC. You can make a good (but not identical copy) with a tool such as ExactAudioCopy (Win), and, of course, a good drive. To my knowledge, no such tool is available on the Mac, but you can use cdrdao, which has been ported to the Mac. You can make a reasonably good copy with a tool capable of reading/writing in DAO mode, such as Toast, DragonBurn, Discribe, etc. iTunes (or Finder, for that matter) copies the tracks from an audio CD, but not its structure, so you don't actually get a copy with iTunes (that's simplifying a bit, but it's close enough for rock 'n' roll). Whether these distinctions matter to you or not, that's another issue. I assume to most people they don't. > or is there any kind of process that happens going from an Audio CD to > AIFF where it would experience any degradation ? Theoretically, no. In practice, it depends. Copying audio from an audio CD is not a "simple" matter of just copying bits from one medium to another. There may appear defects, ranging from small ones, which most people don't notice, to very audible clicks caused by imperfections on the disc surface. <0x0192> -------------- next part -------------- An HTML attachment was scrubbed... URL: http://listserver.themacintoshguy.com/pipermail/x4u/attachments/20050428/0d719e4f/attachment.html