Disk utility with audio CD

Disk Utility does not copy audio CDs.

You can use iTunes. Rip the original CD into AIFF format, or move the AIFF files you have now into iTunes, and then burn as many audio CDs as you like. AIFF is a lossless format.

Import the AIFF files into iTunes and use iTunes to burn an audio CD.

Disk Utility does not support the audio CD format. It can import tracks from an audio CD and make a data CD or disk image with AIFFs, but it cannot make a " red book" audio CD, not from the original nor from a disk image. You need iTunes, Toast, or some other audio CD burning program for that.

Yes, as long as you stick to AIFF, it will all be lossless.

Thanks for the feedback.

The best way to make a copy of an audio CD is to make a disk image with Toast (since you have it), not Disk Utility.

Given that you have AIFF files and not the original disc, you can use Toast or iTunes to burn a copy. The quality of the tracks will be identical to the originals. One thing that will get lost is the length of time in the gap between tracks, since you have only saved the tracks themselves. You can also get the order of the tracks rearranged it you're not careful.

For the curious, audio CDs don't have files on them--the tracks are just streams of bytes. The Mac OS presents the tracks as AIFF files for your convenience, and that's what Disk Utility uses.

Another option is to use Burn. It's a free program that can convert that collection of AIFFs back to an audio CD (and it won't degrade the quality).

If you plan on keeping the files on your computer, and space is a concern, you could import them into iTunes as Apple Lossless. They'd still be full CD quality, but about half the size of AIFF.