So, I'm a new owner of an 07 STS.. I was really excited to see 6 DL DVD changer (WOW!!!) I'm thinking 6X9 GB of music... that''ll work!!
... but that's not how it's turning out... MP3 player is limited to only CD's not DVD.. you can use DVD audio that doesn't give the flexibility of MP3's or the incredible amount of storage the car can handle..
If you are still having problems using Nero on CD change your band of disk to Sony with the highest write speed you can buy that will help with the "write error" you are getting..