When I import MPEG 2 files (created both by Preimere and Vegas) and try to play back from file preview or timeline, the video plays of a few seconds than experiences a momentary freeze, then continues playing for a few seconds. This continues for entire video. AVI files preview fine. This happens both in Vegas 3 and DVD Architect Demo Version. When I preview the same files in Preimere and Ulead DVD Workshop they play fine. ??????? Thanks for any imput. Wobblyboy