Just to clarify for those who seem confused about the topic: “CD Audio”, the kinds of files that are produced on music CDs from music producers is a completely different format from “MP3” files, which can also be burned onto CDs by computer users and will (also) play on CD ROM drives – in computers. I don’t know of any standard “CD players” (the only ones I’m familiar with are my clock radio and my car’s CD player, and a defunct CD player from the late 1980s that I just haven’t thrown out yet) that will also play MP3 files, but I don’t doubt that some are made. I don’t think those are very common, but I could be wrong about that, too.
I just don’t use CD players any more, at all. I do buy music CDs and I “rip” (copy and convert) the audio tracks into named MP3 files that I can play through my computer and also copy to my iPod, which I can also plug into the car radio and play there. (And when I do that I don’t have to worry about bumpy roads making the CD player skip, as well has having a hell of a lot more music stored on the iPod than I can ever hope to burn onto a CD.)
The CD ROM drive in your computer is built to recognize “CD Audio” and play it as if it were a “regular CD player”, and obviously your computer can also recognize and play MP3 files wherever it finds them.
I think that CD Audio formatting is different because:
1. It preceded MP3 file technology (because we’ve had CD players since before most of us had computers) and
2. Perhaps an audiophile can tell us for sure, but I think that the CD Audio format allows for a wider range of sound than the MP3 format / players can duplicate. But maybe that’s just an urban legend or some false factoid that I’ve heard. I can’t tell the difference, anyway.
You may notice if you “open” the directory for a CD Audio disk that you put into your computer’s CD ROM drive (or DVD drive) that the files do not have “song name”, “size”, “length” or any of the other details that will be stored when you rip the disk to create MP3 files. The files simply are not formatted to be read “by the computer”, but the audio portion of the drive can recognize and play them. The ripping process simply involves the computer intercepting the data stream of 1s and 0s that would be sent to the speakers as music (as well as the meta-information about the song title, the artist, the length of the piece and other attributes) and recording that as the MP3 (or WAV or other equivalent) “computer” file that your Operating System and whatever audio software you use can recognize and play back the track in the alternate format.
Very simply, then, “CD Audio” is not a computer-recognizable format. But like inputs from all kinds of peripherals, the data stream to the peripherals (your computer speakers) can be intercepted and turned into files that the computer can recognize, duplicate and edit (with the proper software) like nearly any other computer-recognizable file.
Your ears may not recognize the difference, but the computer has to.