First time writting...I need assistance using Digital Producer...successfully used Digital Director to make 3 different videos. I went to produce them and it tell me that there is not enough disc space. It won't let me burn a dvd. I have tried a tril short video..no luck...what do I need to do to remedy my problem. I want to burn on to a Sony DVD +R ...120 mins...4.7 GB. Is that a good brand DVD to use?