I have an iMac dv, rather old, which I have been happily using for about 5 years, without updating anything. I have a Yamaha CD burner & use Toast Titanium with it. The CD's I create of jpg pics look blurry when played on a DVD player. What should I be doing that I am not? Do I need different software, or specific file sizes? If you are kind enough to reply, please don't get too technical.