Just to save anyone trying this a blank DVD and burn time. I have confirmed, through trial, that MP3's can only be played from a CD-R and that DVD burns do not work in the stock stereo. I tried multiple brands -R and -S and they do not work. The CDRs with MP3s however work brilliant. With 6 disk capacity you can still have over 1000 songs on 700 MB CDRs. That's a few more tunes than I need anyway