I'm trying to edit my Home movie with Pinnacle Studio 9 (AVI file that transferred from Sony DV Camcorder) on my new Sony Vaio Computer. When I preview progress of my work sound doesn't start right away and often quite behind but it's not always the same. I understand I need a better Sound Card that one built in, but question is will Sound Blaster or other external USB card enough to do the job. Is sound card to do much with quality of rendering or just convinience during work. It did not happened with my older computer.