Thanks for replying. I will try that forum you mentioned and also look for others. I think the fact that i dont use Nero to burn media may be an issue as i believe that is the best one on the market. To answer your question i preview all my movies before finalising them to disk. The problem is i use standard 4.7 Gb datawrite disk (simply they are much cheaper to buy). On roxio DVD builder it says i "cannot burn project to disk as it is estimated to be to large" so........i have to downgrade the audio quality and the video quality in order to fulfill roxios requirements (silly really). I think this may have a bearing on my problems. What do you think?