I'm a newbie big time. I'm having problems with some hd video clips I'm using for a project. When viewed in a normal player they look fine. But when I play them in vegas studio, they play all choppy and slow like there are missing frames. I've tried using the files in the original mpeg4 format and converting tham to wma but neither seems to work. I'm running an amd 9500 quad-core with 4 GB of Ram, on Vista 32 bit.