Why cant I burn my purchased music onto a new dvd?

Hi,

I wanted to make a backup of the music I have purchased from the Music store. I have not burnt any backup CD’s or DVDs at all yet.

There are 134 songs with 697.3MB. (This doesnt mean much to me to be honest!) As this is too much for a CD I thought I would burn a DVD.

As per the ITs “help” instructions “to create a data CD or Burn DVD” I went into Itunes preferences and selected the advanced botton, then “Burning” header, then Disc Format and selected DVD and Preferred speed tab to 2x. I have also tried maximum speed.

The brand new DVD is a Panasonic DVD Ram 3X speed 4.7GB 120 mins rewritable.

All songs were checked and were in the “Purchased folder” I selected ‘burn disc’ from Itunes window and put the blank DVD in as requested...’checking media’ appears in the iTunes window.......

the DVD is continually ejected with no explanation as to why!

I have also “highlighted’ all of the songs and completed the same procedure as above with the same result.
I tried moving the selected playlist to a new folder with no joy again.
What am I doing wrong?

Thx George UK