Fixing "unknown" song titles or artists on mp3s for CTS sound system.

If you play mp3s in your Cadillac CTS that came from your computer, either from a CD-r or USB source, you may have some that list the artist, album, title or other information as "unknown." This may be true even though, on your computer, in iTunes for example, the information is there.

The reason is that all that information is part of the mp3's ID Tag, and there are different versions of ID Tags. The Cadillac CTS sound system reads ID Tag version 2.4, but not some of the others.

The solution is to fix the file in your computer before putting it on CD-r, SD card, iPod or whatever you are going to play in the CTS. On Mac, select the song (or album, or just do your entire mp3 library at once -- it goes really fast), hold down the control key, and click on the selected song or songs. A menu will appear; select "convert ID Tags," and choose version 2.4. I think it is "right-click" on a PC to get the menu, but I don't have any PCs.

Now when you take the mp3 files to your CTS to play, however you're doing that, the artists, titles and albums will be just how they are in your iTunes library. Of course, if they are not right there, you'll need to fix that first.