that sounds more like mp3s that were converted to regular cd audioloanman said:I have an 03 escalade with 05 touchscreen nav and I can play mp3's downloaded from my I-tunes. The trick is that it has to be a writable disc not a rewriteable disc. The difference is that the writeable disc once burned cannot be burned again and is locked with that info. I tried putting in a rewritable burned disc and it did not work, but the writeable one did! Now I have about 17 songs that I downloaded from Itunes on that writeable disc and it works great!