Hello, I recently got a Sony DRX-500UL DVD burner. I updated to latest firmware and have gotten everything squared away. My problem is this:

I have a Magnavox MDV 450 - it plays my SVCDs, DVDs, MP3 on CDR, and JPG on CDR. It will NOT play MP3s off of DVD+RW. This is literally the same DVD+RW that I have tested DVD-Video with. I noticed that this site's compatibility list says that this should be possible, so here I am looking for advice!

If I can overcome this wrinkle, the player would be near perfect!

Thanks!