On Jul 12, at 11:10 AM, Marta Edie wrote:
No, it did not burn as an AUDIO, that is when I got the write error, it burned fine when I clicked to burn as the mp3,clicking the mp3 button. But that would not make any difference, since none of my burned Cds will play on my outside player, none, neither the ones I made several years ago from all kinds of music, operas, folksongs. They all imported and they all burned, they all played on the computer, but none plays on the outside regular CD players I have.
I think there's an apples and oranges problem here that's been alluded to, but not made explicit by several people. Here's the deal.
Music CDs that you buy from the store are made for one purpose: play sound on a CD player. They use a very old formatting and storing scheme for sound, called CDA, that dates from the 1970s. There is no compression of the sound files, so only 74 minutes of sound can fit on a standard audio CD. They cannot store MP3 files, only CDA-type audio. (I know this is a tiny lie.)
The data format most often created on computer CDs is technically called ISO 9660 or CDFS. A disk formatted in this way can contain a little over 700 megabytes of any kind of data. This kind of disk is what's usually used to store MP3 files. Since MP3 sound files are compressed via mathematical magic, you can easily fit ten hours or more of sound on a CDFS-formatted CD.
Many music players designed for playing commercial CDs can only play CDA-formatted disks and CDA music files. This is especially true of players made more than eight or ten years ago. Most of the newer players can handle ISO 9660 disks and MP3 sound files.
Another problem is that the physical characteristics of home-burned CDs are different than the characteristics of commercial CDs. Commercial CDs have a thin aluminum film sandwiched inside, so they're very reflective and easy for the player to read. Home-burned CDs have a chemical layer that changes reflectivity when it is exposed to a particular type of laser, and its reflectivity is not nearly that of an aluminum layer. Because of this, some older music CD players have trouble reading home-burned CDs, even when they are in the CDA format. Again, this is especially true of older players, designed before CD-RW disks became ubiquitous.
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